A block of mass `m` moves with a speed `v` towards the right block which is in equilibrium with a spring attached to rigid wall. If the surface is frictionless and collisions are elastic, the frequency of collisions between the masses will be:

The right block in the figure moves at a speed v towards the left block placed in equilibrium. All the surfaces are smooth and all the collisions are elastic. Find the time period of the motion

A ball of mass m moving with speed v towards the right strikes a wall moving towards the left with speed u . Find the change in the K.E. of the ball if the collision is elastic.

The left block in figure moves at a speed v towards the right block placed in equilibrium. All collisions to take place are elastic and the surfaces are frictionless. Show that motion of the two blocks are periodic. Find the time period of these periodic motions. Neglect the widths of the blocks.

The left block in figure moves at a speed v towards the right block placed in equilibrium. All collisions to take place are elastic and the surfaces are frictionless. Show that motion of the two blocks are periodic. Find the time period of these periodic motions. Neglect the widths of the blocks.

The right block in figure moces at a speed V towards the left block placed in equilibrium. All the surfaces are smooth and all the collisions are elastic. Find the time period motion. Neglect the width of the blocks.

The right block in figure moces at a speed V towards the left block placed in equilibrium. All the surfaces are smooth and all the collisions are elastic. Find the time period motion. Neglect the width of the blocks.

The right block in figure moces at a speed V towards the left block placed in equilibrium. All the surfaces are smooth and all the collisions are elastic. Find the time period motion. Neglect the width of the blocks.

Infinite blocks each of mass M are placed along a straight line with a distance d between each of them. At t = 0 the leftmost block is given a velocity V towards right. The coefficient of frication between any block and the surface is mu and all collisions are elastic. Let the total number of collisions be N then N is

Infinite blocks each of mass M are placed along a straight line with a distance d between each of them. At t = 0 the leftmost block is given a velocity V towards right. The coefficient of frication between any block and the surface is mu and all collisions are elastic. Let the total number of collisions be N then N is

Three blocks are initially placed as shown in the figure. Block A has mass m and initial velocity v to the right. Block B with mass m and block C with mass 4 m are both initially at rest. Neglect friction. All collisions are elastic. The final velocity of block A is