A Woman Sits on a Spinning Piano Stool with Her

Multiple Choice

A woman sits on a spinning piano stool with her arms folded.When she extends her arms,which of the following occurs?

A) She increases her moment of inertia,thereby increasing her angular speed.
B) She increases her moment of inertia,thereby decreasing her angular speed.
C) She decreases her moment of inertia,thereby increasing her angular speed.
D) She decreases her moment of inertia,thereby decreasing her angular speed.
E) Both her moment of inertia and her angular speed remain constant.