A block of mass 1.6 kg is attached to a horizontal spring that has a spring constant of 1.0 x 103 N/m, .

The spring is compressed 2.0 cm and is then released from rest. Calculate the speed of the block as it passes through
the equilibrium position x = 0 if the surface is frictionless.

Question

A block of mass 1.6 kg is attached to a horizontal spring that has a spring constant of 1.0 x 103 N/m, .


The spring is compressed 2.0 cm and is then released from rest. Calculate the speed of the block as it passes through
the equilibrium position x = 0 if the surface is frictionless.

mani_jha · Answer

At equilibrium position, all the body has got is kinetic energy, which actually results from the potential energy of the spring.
$$kx ^{2}/2=mv ^{2}/2   x=2cm=0.02m$$
Find v