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Question

Two blocks of masses m1 and m2, interconnected with a spring of stiffness K, are kept on a smooth horizontal surface. Find out the ratio of velocity, displacement, kinetic energy and acceleration to block with mass m1 to block with mass m2.

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Solution

Here x is the displacement, ν is the speed, p is the momentum, a is the acceleration, KE is the kinetic energy, F is the force.
(Fext)system=0p1+p2=0
m1ν1=m2ν2ν1ν2=m2m1
m110ν1dt=m210ν2dt
Where t is the time interval of motion of each block.
m1x1=m2x2x1x2=m2m1
KE1KE2=P21/2m1P22/2m2=m2m1
F1F2=kxkx
Where x is the deformation of the spring.
F1F2=1m1a1m2a2=1a1a2=m2m1

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