- #1
alkaspeltzar
- 354
- 37
Okay, i know that as a ball collides with a pivoting rod on an axis, the ball has angular momentum. Therefore after the collision, the ball is stopped or slowed, and the rod swings.
The ball provides a force and torque to the rod. But if I isolate the ball, isn't the only thing acting on the ball the reaction force? So the ball slows. But what creates a change in its angular momentum, doesn't that require a torque. And if there is a torque on the ball, why doesn't the ball rotate?
The ball provides a force and torque to the rod. But if I isolate the ball, isn't the only thing acting on the ball the reaction force? So the ball slows. But what creates a change in its angular momentum, doesn't that require a torque. And if there is a torque on the ball, why doesn't the ball rotate?