A block `m_(1)`, strikes a stationary blocks `m_(3)` inelastically. Another block `m_(2)`, is kept on `m_(3)`. Neglecting the friction between all contacting surfaces, the fractional decrease of `KE` of the system in collision is

A block m_(1) strikes a stationary block m_(3) inelastically. Another block m_(2) is kept on m_(3) . Neglecting the friction between all contacting surfaces, calculate the fractional decrease in KE of the system in collision.

A force F accelerates a block of mass m on horizontal surface. The coefficient of friction between the contact surface is . The acceleration of m will be -

In fig Block m_(2) is loaded on block m_(1) . If there is no relative sliding between the block and the inclined plane is smooth , find the friction force between the block

In fig Block m_(2) is loaded on block m_(1) . If there is no relative sliding between the block and the inclined plane is smooth , find the friction force between the block

A block of mass m is stationary on a horizontal surface. It is connected with a string which has no tension. The coefficient of friction between the block and surface is m . Then , the frictional force between the block and surface is:

A block of mass 2 m collides,elastically with a masss m kept at rest. Friction exists between the block B ,and surface with coefficient mu=0.3 , whereas no.friction exists between block A and the surface. How many collision are possible between the blocks?

The maximum value of the block m_(2) for which the system will remain in equilibruim (coefficient of friction between block m_(1) and plane surface is mu , Pulley are mass less ) is :

A block of mass 2 m collides,elastically with a masss m kept at rest. Friction exists between the block B ,and surface with coefficient mu=0.3 , whereas no.friction exists between block A and the surface. The velocity of the blocks just after the first collision will be: