A body of mass m is whirled at a constant angular velocity on the end of a string of length R.To double the kinetic energy of the body as it whirls while maintaining the angular velocity,the length of the string must be changed to
A)2R
C)R/2
D)4R

Question

A body of mass m is whirled at a constant angular velocity on the end of a string of length R.To double the kinetic energy of the body as it whirls while maintaining the angular velocity,the length of the string must be changed to
A)2R 
C)R/2 
D)4R

Quizplus · Accepted Answer

The Answer of A body of mass m is whirled at a constant angular velocity on the end of a string of length R.To double the kinetic energy of the body as it whirls while maintaining the angular velocity,the length of the string must be changed to
A)2R 
C)R/2 
D)4R

A Body of Mass M Is Whirled at a Constant