The system shown in figure is released from rest with mass `2kg` in contact with the ground. Pulley and spring are massless, and friction is absent everywhere. The speed of `5kg` block when `2kg` block leaves the contact with the ground is (force constant of the spring `k=40Nm^-1` and `g=10ms^-2`)

System shown in figure is released from rest . 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 (force constant of spring k = 40 N//m and g = 10 m//s^(2))

System shown in figure is released from rest . Pulley and spring is mass less and friction is absent everywhere. The speed of 5 kg block when 2 kg block leaves the constant of with ground is (force constant of spring k = 40 N//m and g = 10 m//s^(2))

In the system shown in figure m_(B)=4kg , and m_(A)=2kg . The pulleys are massless and friction is absent everywhere. The acceleration of block A is.

The system shown in figure is released from rest. String is massless, and pulley is smooth. Find work done by gravity on 4kg block and workdone by the string on 1 kg block in 2 seconds?

The system shown in the figure is in equilibrium and all the blocks are at rest. Assume that the masses of the strings, the pulley and the spring and negligible with respect to the masses of the blocks and friction is absent. Find the acceleration of block C, just after cutting the spring 1. [g=10ms^(-2)]