JSSC JE (ME) :QUIZ-30 || Collisions & Virtual Work

A body at rest breaks into two pieces of equal masses. The parts will move

From a point, on a smooth floor, a toy ball is shot to hit a wall. The ball then returns back to the point of projection. Find the coefficient of restitution between the ball and the wall if the time taken by the ball in returning is thrice the time taken in reaching the wall

The coefficient of restitution is the ratio of _________.

A contraption was to be made for a technical event. In which a ball bearing 500 g starts from a rest and it is to strike another ball bearing 50 cm below it. The ball bearing slides down a tube twice its diameter and is assumed to be frictionless. Find the velocity with which it will strike the ball. Take e = 0.6

A ball with a mass of 0.5 kg bounces off of a wall. Initially, it traveled horizontally to the right, toward the wall at 30.0 m/s. In then bounces, and travels horizontally to the left, away from the wall at 10.0 m/s. What is the impulse of this collision between the ball and the wall? (Assume left direction as the positive and right direction as the negative)

A mass of 3 kg moving with a velocity of 4 m/s hits a stationary roller of mass 12 kg. After the collision, mass sticks to roller and roller starts to move. What will be its angular velocity if radius is 1 m?

The principle of virtual work can be applied to elastic system by considering the virtual work of

What is the virtual Quantity in case of virtual work method?