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spring should not be deformed. • Unit of k: N/m. Work Done By a Spring: Since the force is not constant, we must perform an integral to determine the work: The work done by the spring when moving a small distance dx: dW = Fdx= −kxdx The total work done in moving from position x i to x f : W = − kxdx = 1 xi 2 ∫x f kx i 2 − 1 2 kx f 2 ...

Apr 23, 2007 · Two blocks, of masses M=2.0 kg and 2M, are connected to a spring of spring constant k=200 N/m that has one end fixed. The horizontal surface and the pulley are frictionless, and the pulley has negligible mass. The blocks are released from rest with the spring relaxed.

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Two blocks of mass m1 and m2 (m1>m2) slide on a frictionless floor and have the same kinetic energy when they hit a long rough stretch (mu>0), which slows them down to a stop. Which one goes farther? m2

Two masses m1 and m2 are suspended together by a massless spring of constant K. When the masses are in equilibrium, m1 is removed without disturbing the system. The amplitude of oscillations is [J & K CET 2005]

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45. Two blocks connected by a rope of negligible mass are being dragged by a horizontal force F (Fig. P5.45). Suppose that F = 68.0 N, m1 = 12.0 kg, m2 = 18.0 kg, and the coefficient of kinetic friction between each block and the surface is 0.100. (a) Draw a free-body diagram for each block.

Aug 22, 2014 · Pulley and spring is massless and friction is absent everywhere. The speed of 5 kg block when 2 kg block leaves the contact with ground is (Take force constant of spring k = 40 N/m and g = 10 m/s2) A) 2 m/s` B) 2 2 m/s C) 2m/s D) 4 2 m/s 17. Two blocks of masses m1 = 1 kg and m2 = 2 kg are connected by a non-deformed light spring.