College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 31

Pendulum 1 is made of a 1.50-m string with a small Super Ball attached as a bob. It is pulled aside 30° and released. At the bottom of its arc, it collides with another pendulum bob of the same length, but the second pendulum has a bob made from a Super Ball whose mass is twice that of the bob of pendulum 1. Determine the angles to which both pendulums rebound (when they come to rest) after they collide and bounce back.