A figure skater goes into a spin with arms fully extended
PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
8. A figure skater goes into a spin with arms fully extended. Which of the following describes the changes in the rotational kinetic energy and angular momentum of the skater as the skater's arms are brought toward the body?
Rotational
Kinetic Energy
(A) Rotational Kinetic Energy: Remains the same, Angular Momentum: Increases
(B) Rotational Kinetic Energy: Remains the same, Angular Momentum: Remains the same
(C) Rotational Kinetic Energy: Increases, Angular Momentum: Remains the same
(D) Rotational Kinetic Energy: Decreases, Angular Momentum: Increases
(E) Rotational Kinetic Energy: Decreases, Angular Momentum: Remains the same