A ball attached to the end of a string is swung around in a circular path of radius r.If the radius is doubled and the angular speed is held constant,the linear speed will
A)remain the same.
B)increase by a factor of 2.
C)decrease by a factor of 2.
D)increase by a factor of 4.
E)decrease by a factor of 4.

Question

Quizplus · Accepted Answer

The linear speed is directly proportional to the radius, so doubling the radius will double the linear speed. The angular speed does not affect the linear speed in this case.

A Ball Attached to the End of a String Is