Q. A person standing on a rotating platform has his hands lowered. He suddenly outstretch his arms. The angular momentum
A) Becomes zero
B) Increases
C) Decreases
D) Remains the same
Explanation
(d) When the hands outstretched, moment of inertia increases and angular velocity decreases so that angular momentum remains unchanged
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.