A ball is attached to a string and revolves in a horizontal circle with angular momentum. When the string breaks at point B on the circumference, the ball moves off tangentially along path B-Q. As it moves along B-Q, increasing its distance from the center of the circle, its angular momentum
A) remains constant.
B) decreases.
C) is now zero.
D) increases.

Question

Quizplus · Accepted Answer

Angular momentum is conserved in the absence of external torques, so when the string breaks and the ball moves off tangentially, its angular momentum remains constant.

A Ball Is Attached to a String and Revolves in a Horizontal