Question

In a collision of a pendulum against a paperweight what equation can I use to find the velocity of the mass on the string after the collision?

Answer 1

Assume an elastic collision. Use conservation of energy to find the velocity of the mass on the string after the collision. \[v=\sqrt{2gh}\]where h is the height of the mass when released from rest.

Answer 2

is the paperweight on the table and mass on the pendulum is moving horizontally at the time of collision? in that case you need to use momentum conservation in the horizontal direction. does it stick to the paperweight?