## Two identical blocks of mass m each are connected by a spring             ## Two identical blocks of mass m each are connected by a spring

What is the value of Q? 15. compression Exam 2 Review Questions PHY 2425 - Exam 2 16 A ball of mass 2. Block A has a mass M and is initially moving at speed V. Their unstretched lengths l are negligibly small and each has spring constant k. A heavy mass is then hung on Two masses m 1 = 10. Parts (a) – (c) as described above. A displacement of the mass by a distance x results in the first spring lengthening by a distance x (and pulling in the -\hat\mathbf{x} direction), while the second spring is compressed by a distance x (and pushes in the same -\hat\mathbf{x} direction). 4 g b. At some later instant, the left block is moving at 1 m s to the left, and the other block is moving Two blocks are connected together by an ideal spring, and are free to slide on a horizontal frictionless surface. 7 J B) 3. (b) The distance the spring is compressed. In a previous part of this lesson, the motion of a mass attached to a spring was described as an example of a vibrating system. The spring is supposed to obey Hooke’s law, namely that, when it is extended (or compressed) by a distance x from its natural length, the tension Ktot = 0. A small glob of putty, D, of mass m D strikes the end C of member ABC with a velocity v0 and the putty sticks to the bar. 5. These problems are provided to you as a study guide for your exams. A system consisting of two pucks of equal mass m and connected by a massless spring (with spring constant k) is initially at rest on a horizontal, frictionless table with the spring at it’s uncompressed length. Two blocks of mass m1 = 5. 5 kg mass is placed on it, and slowly lowered until the mass is at rest, the spring is squeezed to a length of 1. The magnitude of the tension in the string between blocks B and C is T= 3. What are the magnitude and direction of the velocity of the piece having mass 3m? Magnitude Direction (A) V 2 (B) V 2 (C) 2 3 V (D) 2 3 V 28. P10. 5 g c. 7 kg B) 17 kg C) 27 kg D) 1. 2. A massless Hooke's Law spring has unstretched length of 1. Use energy methods. 57a. 1. Answer: 39. Tension T1 is 187 N and tension T2 is 78 N. 50 m. A third identical block C ,moving on the floor with a speed v along the line joining A and B, collides with A. 15 -29, two identical springs of spring constant 7580 N/m are attached to a block of mass 0. Find: (a) the velocity of the two blocks after the collision. a) Draw a free body diagram for each block at an instant during the collision. Attach a solid cylinder of mass M and radius R to a horizontal massless spring with spring constant k so that it can roll without slipping along a horizontal surface. The acceleration of gravity is 9. Two identical blocks, each of mass M, are connected by a light string over a frictionless pulley of radius R and rotational inertia (Fig). A total charge Q is slowly placed on the system, causing the spring to stretch to an equilibrium length L, as shown in Figure P23. Two blocks A and B, each of mass m, are connected by an ideal spring of constant k and block B is placed on a horizontal surface. Suppose that the masses are attached to one another, and to two immovable walls, by means of three identical light horizontal springs of spring constant , as shown in Figure 15. 11 kg blocks (labeled 1 and 2) are initially at rest on a nearly frictionless surface, connected by an unstretched spring, as shown in the upper diagram, where x2 = 0. The spring is then released by remote control. Each individual object analysis generates an equation with an unknown. Questions 31 – 32. The system is released from rest when the spring is unstretched. If we look at a segment of string of mass Dms: is the force exerted on this segment by the part of the string to the right. 400kg. The block of mass m1 lies on a horizontal surface and is connected to a spring of force constant k. Two blocks connected by a string are pulled across a rough horizontal surface by a force applied to one of the blocks, as shown. The block is initially at rest on a 3 vo (a) Determine the final speed of the block. •11 In Fig. Find the normal frequencies and normal modes of the system. 6 m for one full cycle is A) 100. A block of mass m 1 = 18:0 kg is connected to a block of mass m 2 = 32. of M that can be pulled by the man without slipping on the ground. The mass on a spring motion was discussed in more detail as we sought to understand the mathematical properties of objects that are in periodic motion. ball, which has a mass of 57 g, reaches a maximum height of 7. 6). 8 m/s2 . 0 cm and has negligible mass. 245 kg. block that is at rest. What would be the final speed of the sled if the objects were dropped into it in reverse order? 1 1) The two blocks of masses M and 2M above initially travel at the same speed v but in opposite directions. Both m 1 and m 2 accelerate to the right at 3 m/s along the frictionless surface. Coefficient of friction between all the surfaces is 0. Object B initiallý moves to the right with speed Vo . The spring has a massless platform that is attached to its top (the top of the spring with platform is even with the ground level). Once the blocks come to rest, the spring restores itself and launches the blocks. The magnitude of the tension in the string between blocks B and C is T = 3. 400 m as shown in Figure P23. Find the mass of each block. The level free-assignment-dpp-physics-centre-of-mass 1. The force F makes an angle of 25 degrees to the horizontal. A block of mass m is accelerated across a rough surface by a force of magnitude F that is exerted at an angle ( with the horizontal, as shown above. Problem 3. At t = 0 the left block is at distance L from the wall. In such an approach, free-body diagrams are constructed independently for each object and Newton's second law is used to relate the individual force values to the mass and acceleration. Two blocks of masses m and 3m are placed on a frictionless, horizontal surface. 11. The system is placed on a frictionless horizontal surface and the other end of the spring is firmly fixed to a wall so the block, when displaced from equilibrium a distance A and then released from rest, will Multiple Object Force Problem: Two Blocks Tied Together (Atwood's Machine) A 15 kg block rests on an inclined plane. When the blocks are at rest the 4. We then add on driving and damping We are given two blocks, each of mass m, sitting on a frictionless horizontal surface. 00N. 306 kg is dropped from height h=1. They slide off the right side of the table. If the hanging block of mass m2 falls a distance h before Two blocks are connected by a light string that passes over a frictionless pulley, as shown in Figure 2. The rod is free to rotate about an axis that either passes through one end of the rod, as in (a) and (b), or passes through the middle of the rod, as in (c Problem 2: (30 points) Two identical blocks of given mass m, are attached together by a massless string and constrained to move along a plane that is inclined at a given angle φ to the horizontal. The spring is initially compressed by 55. 0544 J 5. 11 The masses of blocks A, B, and C are mA = 4 kg, mB = 10 kg, and mC = 2 kg. 2 m/s2 to the right, what is the magnitude of . Two identical blocks with mass m, connected by a light spring (neither compressed nor stretched), slide with speed v0 on a frictionless surface towards a wall (see gure below). The spring which egligible . Two masses m 1 and m 2 (with m 2 > m 1) are connected by a AP Physics Free Response Practice – Momentum and Impulse 1976B2. ID:CM-U-154 MULTIPLE CHOICE. 2 kg is dropped on the spring from a height of 3. Q. 0 m/s. 0 kg by a massless string that passes over a light, frictionless pulley. Neglect the masses of the pulleys and the effect of friction. Problem 3 of 4 (26 points): Blocks-pulley system Block 1 and block 2, with masses m 1 and m 2 such that m 1 <<m 2 (m 1 is much less than m 2), are connected by a massless inextensible string wrapped around a massless ideal pulley. asked by tomas on November 1, 2012; Physics. Two blocks I and II have masses m and 2m respectively. Given that Jacques, The force constant of each spring is most nearly (A) 40 N/m (B) 48 N/m (C) 60 N/m (D) 80 N/m (E) 96 N/m. 2/3 g Block m: Block 5m: 20. Displacement of a particle of mass 2 kg moving in a straight line varies with time as s = (2t3 + 2) m Impulse of the force acting on the particle over a time interval between t = 1 s is: (a) Q2. A meter stick is supported at each end by a spring scale. (7 points, suggested time 13 minutes) Two blocks are connected by a string of negligible mass that passes over massless pulleys that turn with. The two outer springs each have force constant k, and the inner spring has force constant k0. The problem statement, all variables and given/known data A system is composed of two blocks of mass ##m_1## and ##m_2## connected by a massless spring with spring constant k. If a person applies a force F to the left block, then the two free-body diagrams are shown (assume there is no friction from the table). 1 Introduction A mass m is attached to an elastic spring of force constant k, the other end of which is attached to a fixed point. 14) Two identical blocks of mass M are on a frictionless surface, connected by a spring of k = 100 N/m and an unstretched length L 0 = 0. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. A charge Q is placed on each block causing the spring to stretch to a new equilibrium length of L = 0. Two spheres A and B have an equal mass and are electrostatically charged such that the repulsive force acting between them has a magnitude of 20 mN and is directed along line AB (Fig. A) Marcel is helping his two children, Jacques and Gilles, to balance on a seesaw so that they will be able to make it tilt back and forth without the heavier child, Jacques, simply sinking to the ground. 23) Two blocks collide on a frictionless surface. 67a. (Assume that no slipping occurs between the cord and determine a) the acceleration of each block, b) the tension in the cord and c) the distance block A will travel in 2 seconds. A vertical force of 15 N is applied to the block (see Fig 4). Three particles of the same mass m 1 = m 2 = m 3 = mare constrained to move in a common circular path. 00 cm and m = 2. An empty sled of mass M moves without friction across a frozen pond 7 •• [SSM] Two systems each consist of a spring with one end attached to a block and the other end attached to a wall. In Figure 4, two masses m 1 = 2. Moving blocks connected by a spring Two identical 0. The block lands on and compresses the spring by a Questions about springs on SAT II Physics are usually simple matters of a mass on a spring oscillating back and forth. Consider three springs in parallel, with two of the springs having spring constant k and attached to two walls on either end, and the third spring of spring constant k placed between two equal masses m. In this problem, you will consider 4 other experiments in which the setup differs from that in experiment 1. The plane makes an angle of 25 o with the horizontal, and the coefficient of friction between the block and the plane is 0. Problem15. The block undergoes SHM. 0. 0kg, which sits on a frictionless horizontal surface as in the ﬁgure below. The mass . Block II has an ideal massless spring (with force constant, k) attached to one side and is initially stationary while block I approaches it across a frictionless, horizontal surface with a speed v o. Q1. A mass of m is suspended from them. Activity Based Physics Thinking Problems in Oscillations and Waves: Mass on a Spring 1) A mass is attached to two heavy walls by two springs as shown in the figure below. One block is released so that its initial speed is zero, while the other block is released with an initial speed of 1 m/s. 4/5 g e. 9 m/s 2 down the incline) Q#15. two hands push identical blocks of mass m toward each other across a level, frictionless surface with a constant force of magnitude Fo over the interval from t1, to t2. Physics 100A, Homework 12-Chapter 11 (part 2) Torques on a Seesaw . Block B has a mass 2M and is initially at rest. 6 Hz •12 What is the phase constant for the harmonic oscillator with the velocity function v(t) given in Fig. A block of mass M is connected to a spring of spring constant k. A light spring is attached to the more massive block, and the blocks are pushed together with the spring between them as shown in the gure below. Where is the block located when its velocity is a maximum in magnitude? Two block A and B each of mass m are connected by a massless spring of natural length L and spring constant K. The blocks are initially resting on a smooth horizontal floor with the spring at its matural length. 3. Two identical springs, each of spring constant K, are connected in a series and parallel as shown in figure 4. Mass m 1 moves on a horizontal surface having a coefficient of kinetic friction μ k = 0. Let ms be the mass of the string: F - T’ = msax. 50 m/s2 θ 19. 00 N applied to the end of the plank and perpendicular to the axes of the cylinders (which are parallel). However, spring motion is the most interesting of the four topics we will cover here because of its generality. Two identical blocks with mass 5. 8. If m 2 = 10 kg, calculate the mass m 1. Find the acceleration of each mass and the tension T 2 in the cord between the two pulleys. If the spring has a spring constant k, what is the maximum compression of the spring? A) v m k B) mv k C) mv k 2 2 D) mv k E) mv 2k 12. Solutions to Homework Set 9 Webassign Physics 105 1) The figure below shows four different cases involving a uniform rod of length L and mass M is subjected to two forces of equal magnitude. If each block has an acceleration of 5. Assume the mass slides on a frictionless floor and neglect damping effects in the springs. Friction is negligible. The first natural mode of oscillation occurs at a frequency of ω=(s/m) 1/2, which is the same frequency as the one mass, one spring system shown at the top of this page. 054393231 0. 35 m/s2 e. Find the time after which the center of mass of this system will be again at the position it was when t = 0. (c) What is the ratio of their kinetic energies? (d) Describe the motion of the center of mass of the system. Two identical objects A and B of mass M move on a one-dimensional, horizontal air track. Two objects with masses m 1 = 3:24 kg and m 2 =  kg are connected by a light string that passes over a frictionless pulley as in the gure. Choose the one alternative that best completes the statement or answers the question. asked by David E. One mass is then given an essentially instantaneous impulse I perpendicular to the direction connecting the masses. The bullet penetrates the block and emerges wi th a velocity of is fired toward a block of mass 4m. 6-2. (a) Is there a net external force on the system? (b) Determine the ratio of their velocities. A charge Q is slowly placed on each block, causing the spring to stretch to an equilibrium length L = 0. The 32. 59a and an unstretched length Li. The coefficient of kinetic friction between m2 and the incline is 0. The outline of this chapter is as follows. Where is the block located when its velocity is a maximum in magnitude? d. Each individual bar has a mass m and a mass moment of inertia of I G. (g = 10 m/s2) Q. The welded object is then pinned at B. 8 kg E) 24 kg 15. 1. The blocks are attached to three springs, and the outer springs are also attached to stationary walls, as shown in Figure 13. Two blocks of mass m and 3m, resting on a frictionless table, are connected by a stretched spring and then released. The goal of the exercise is to determine how much work your racket did on the ball. 15. 6-1. All momentum and energy initially belong to block I. Then find tension in string and acceleration of block B. A) 2. Both blocks, now moving, hit the spring and compress it. 1) The work done by the centripetal force on an object with a mass of 1 kg moving with a constant velocity of 4 m/s into a circular path of radius 0. 1 we solve the problem of two masses connected by springs to each other and to two walls. At Consider two masses, and , connected by a light inextensible string which is suspended from a light frictionless pulley, as shown in Fig. 00 kg and m 2 = 3. m 2 = −0. The blocks are free to move on the platform in the x-direction with no friction. 40 m. The upper spring is attached to the ceiling; a box that weighs 97 N hangs from the lower spring. Three identical blocks, A, B, and C, are on a horizontal frictionless table. 5kg is released from rest at the top of a curved-shaped frictionless wedge of mass m 2 = 3. They are connected by three identical springs of sti ness k 1 = k 2 = k 3 = k, as shown. These problems cover material from throughout the course (both midterm exams and final exam). The angle θof the Two blocks are connected by a light string that passes over a frictionless pulley, as shown in Figure 2. 712 m. The force, F, is causing all 3 blocks to accelerate at the same rate. In experiment 1. The blocks are pulled apart so that the spring is stretched, and then released Two identical blocks are connected to the opposite ends of a compressed spring. 500 and is subject to a constant force F = 20. The blocks initially slide together on a frictionless surface with velocity v to the right. 4 An inclined plane makes an angle 30° with the horizontal. (d) Determine the work the racket did answer and are worth 12 points each. Two blocks of mass m and 5m are connected by a light string which passes over a pulley of negligible mass and friction. A block with a mass M is attached to a spring with a spring constant k. At some later instant, the left block is moving at v/2 to the left, and the other block is moving to the right. After being connected, each spring is stretched an amount L and their free ends are anchored at y = 0 and x = ±L as shown (Figure 1) . The spring constant is 775 N/m. On pushing block A, is it possible to lift off B? In experiment 1, two hands push identical blocks of mass m toward each other across a level, frictionless surface with a constant force of magnitude Fo over the interval from t1 to t2. 3 Two blocks A and B of mass m 10 kg and 20 kg respectively are placed as shown in figure. What are the accelerations of each block just after the release and 10 s later? The coefficients of A two degree-of-freedom system (consisting of two identical masses connected by three identical springs) has two natural modes, each with a separate resonance frequency. Two identical blocks, also of mass, m, are connected to a post ﬁxed to the platform by two identical springs of spring constant, k. (a) Find the normal mode frequencies for the system in terms of k and m. The ends of two identical springs are connected. System C is composed of both blocks. A third identical block ’C’ (mass m) moving with a speed v along the line joining A and B collides with A. Two identical blocks resting on a frictionless, hori- zontal surface are connected by a light spring having a spring constant k = 100 N/m and an unstretched length Li = 0. 10 m . When a 37. 0 kg are connected to each other by a light cord which passes over two identical pulleys , each having a moment of inertia I = 0. Let k_1 and k_2 be the spring constants of the springs. Two blocks with masses m1 = 1. Two masses attached to a fixed vertical spring. We encounter the important concepts of normal modes and normal coordinates. 00N . 98 m /s2 Example: Two identical blocks of 10 kg each are sitting on an incline with an angle q = 30°. (a) No. Physics 218 Final Exam Two!identical!objects!of!mass!m!are!released!fromrest!in!a!smooth In the direction of each spring we have a force of F=!k A force of F = 90 N is exerted on mass m 1 as shown. Afterward the sled moves with speed Of. A plank with a mass M = 6. If the hanging block of mass m2 falls a distance h before x-direction. Show your work for each part in the space provided after that part. 0 m above the point at which you hit it, and the ball’s velocity just before you hit it was 12 m/s directed horizontally. 043. A block of mass m=. Two identical blocks A and B, each of mass ‘m’ resting on smooth floor are connected by a light spring of natural length L and spring constant K, with the spring at its natural length. 0-kg block slides on a frictionless 37° incline plane. Assume Sample Exam Questions ME274 – Basic Mechanics II Attached are copies of exam questions from past semesters in ME 274. CHAPTER 17 VIBRATING SYSTEMS 17. The spring is unstretched when the system is as shown in the gure, Two Spring-Coupled Masses Consider a mechanical system consisting of two identical masses that are free to slide over a frictionless horizontal surface. 4 kg and m2 = 4. The upper block is connected via a second massless inextensible string that passes over a massless pulley, to a third block of unknown mass mu. 8 J C) 0 J D) 80 J Two identical metallic blocks resting on a frictionless horizontal surface are connected by a light metallic spring having a spring constant k as shown in Figure P23. 300 m as shown in Figure P19. The two pieces of mass m move off at right angles to each other with the same magnitude of momentum mV, as shown in the diagram above. After the collision the two blocks stick together. 750 m. is the force exerted on this segment by the part of the string to the left. 15) Two pith balls of equal mass are suspended by strings of for another object. Assume that each block has mass m = 0. 0 kg each are connected to the opposite ends of a compressed spring. In Section 2. 19/21 points | Previous AnswersMI3 9. The acceleration of the block is: (Ans: 2. 0 kg and m 2 = 30. FIND a)max. 0 kg and m2 = 10. They collide and stick together. An example involving two blocks on a table is shown in Fig. 500 m as shown in Figure P23. Two identical metallic blocks resting on a frictionless horizontal surface are connected by a light metallic spring having the spring constant k = 100 N/m and an unstretched length of L 0 = 0. 4. 06 m. In experiment 1, two hands push identical blocks of mass m toward each other across a level, frictionless surface with a constant force of magnitude F o over the interval from t 1 to t 2. kg are connected by a massless rod and slide on a frictionless 30° incline as shown in Fig 5. The pulley is rigidly connected to the top of an inclined plane which makes an 86. 59b. on April 25, 2012; physics. When both blocks are released simultaneously and the spring has dropped to the surface, m1 is found to have a speed of 3. Determine the angle θ, the tension in cords AC and BC, and the mass m of each sphere. 1985-Spring-CM-U-1. IF ms ~ 0 , then we see that = Since and have the same magnitude, = . m 2 of block 2 is greater than Two identical blocks with mass m, connected by a light spring (neither compressed nor stretched), slide with speed v0 on a frictionless surface towards a wall (see gure below). A charge Q is slowly two identical springs, each with a relaxed length of 50 cm and a spring constant of 600 N/m, are connected by a short cord of length 10 cm. Assuming the blocks are released from rest, ball, determine the spring constant of the spring. asked by Kaylee on June 22, 2014; Physics. A cord initially holding the blocks together is burned; after that happens, the block of mass 3m moves to the right Review. The two blocks-spring system is initially at rest. A 3. 13. The blocks are oscillating in simple harmonic motions with equal amplitudes. A bullet of mass m and velocity v o frictionless horizontal surface. 75 m. Let us again apply Newton's second law to each mass in turn. The identical springs are horizontal, and the blocks are supported from below by a frictionless horizontal table. 1 kg are at rest on a frictionless surface with a compressed spring between them. What is the acceleration of the masses in terms of the acceleration due to gravity, g? a. A third identical block C (mass m) moving with a speed (v) along the line joining A and B collides with A. 0-kg block is connected to a spring that has negligible mass and a force constant of k = 220 N/m as shown in the gure below. The plank is pulled by a constant horizontal force F of magnitude 6. Determine (a) the acceleration of each object, (b) the tension in the string, and (c) the distance each object will move in the rst second of motion if both objects start from rest. Two bodies, m1= 1kg and m2=2kg are connected over a massless pulley. Find the magnitude of the acceleration of m 2. 0 kg is acted on by two forces, the reading on a spring scale attached to the object. In experiment 1, two hands push identical blocks of mass m toward each other across a level, frictionless surface with a constant force of magnitude F0 over the interval from t1 to t2. Simple Harmonic Motion Practice Problems PSI AP Physics 1 Name_____ Multiple Choice Questions 1. What is the frequency of oscillation on the frictionless floor? Figure 15-29 Problems 11 and 21. 5. . Without being given the values of and , we cannot determine beforehand which mass m F v dt dv m dt a t s v t v m s 11 0 0 0 11? 0 3 / m s m s kg kgm s v Total graph area Ns F dt v v m v m s kg f f s x f 3 / 8 / 3 15 / 15 ( ) ( 3 / )3 11 0 0 Midterm1_extra_Spring04. If the system is released from rest at a position in which the spring is stretched by an amount x 0 what is the find the period of simple harmonic motion for the center of mass of the Two identical blocks A and B, each of mass m resting on smooth floor, are connected by a light spring of natural length L and the spring constant k, with spring at its natural length. 00 kg (Fig. 31. 6 g d. 00 kg rides on top of two identical solid cylindrical rollers that have R = 5. (b) Describe the motion of each of the normal Problem 57. 16. 46 m/s2 B) 2 Two masses attached to a spring. 67b. Two blocks A and B, each of mass m, are connected by a massless spring of natural length L and spring constant K. The blocks initially slide together on a frictionless surface with velocity 2 m s to the right. To solve for the motion of the masses using the normal formalism, equate forces Three identical blocks connected by ideal strings are being pulled along a horizontal frictionless surface by a horizontal force F. 86). negligible friction, as shown in the figure above. The blocks are initially resting on a smooth horizontal floor with the spring at its natural length, as shown in figure. 10. Object A initially moves to the right with speed 300, so that it collides with object B. We will solve this in two ways { a quick way and then a longer but more fail-safe way. (20 pts) A small block of mass m 1 = 0. A laboratory cart with a mass of m and velocity v runs headlong into a stationary spring bumper and compresses the spring. Experiment 1 In this problem, you will consider 4 other experiments in which the setup differs from that in experiment 1. A) 1. Express your-answers to the following in terms of M and vo A second approach involves the use of two separate individual object analyses. Note that the force pushing the right block rightward is only the normal force between the blocks, and not the applied force F. 0 N. The string does not slip on the pulley, and it is not known whether or not there is friction between the plane and the sliding block. time: first an object of mass m and then an object of mass 2m. The maximum compression in the spring is proportional to: Two identical blocks resting on a frictionless, horizontal surface are connected by a light spring having a spring constant k = 100 N/m and an unstretched length Li = 0. Assume that each block has mass m= 0. I. P. A mass of 95. Example 4: Two blocks connected by a spring; Two identical blocks of mass m are connected with a massless spring and placed on a horizontal and frictionless table. 00 kg are connected by a massless string passing over a massless and frictionless pulley. The maximum compression in the spring is Consider a mass m with a spring on either end, each attached to a wall. Best Answer: Three identical blocks connected by ideal strings are being pulled along a horizontal frictionless surface by a horizontal force F. Finding equation of motion for a two mass one spring system. Two slender bars of length, L, are welded together with an angle of 120º between the bars as shown. Two blocks are connected by strings and hung from the ceiling as shown. Directly underneath the block is a spring in its equilibrium position with spring constant k=2 N/m. Two block A and B each of mass m are connected by a massless spring of natural length L and spring constant K The blocks are initially resting on a smooth horizontal floor with the spring at its matural length A third identical block C ,moving on the - Physics - Work Energy And Power Simple Harmonic Motion Practice Problems PSI AP Physics 1 Name_____ Multiple Choice Questions 1. 33 m. 20 kg m 2 and radius R= 0. A total charge of Q is slowly placed on the system, causing the spring to stretch to an equilibrium length of L 1. two identical blocks of mass m each are connected by a spring

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