The bob A of a pendulum of length 1 m released from 30^(@) to the vertical hits another bob B of same mass at rest on the table. How high does the bob A rise after the collision and find the velocity of B.

The bob A of a pendulum of length 1 m released from 30^(@) to the vert

1.	The bob A of a pendulum of length 1 m released from 30^(@) to the vertical hits another bob B of same mass at rest on the table. How high does the bob A rise after the collision and find the velocity of B.
Answer» Solution :The BOB of pendulum acquires a velocity `V = sqrt(2gl(1-costheta))`, onreaching the LOWER most POSITION and makes elastic collision with the bob B of same mass. Hence the bodies simply exchange their velocities after collision. The bob of pendulum does not RISE at all and velocity of B is `V=sqrt(2gl(1-costheta))=1.62ms^(-1)`