Physics Rotational Mechanics Level: Misc Level

A diver can change her rate of rotation in the air by tucking her head in and bending her knees.Let,s assume that when she is stretched out straight she is rotating at 1 revolution per second. Now she goes in the tuck and bends effectivly shortening the length of her body half. What will her rate of rotation be now?

a) 5 hz

b)4 hz