Physics - Rotation Question with Solution | TestHub
PhysicsRotationAngular momentumMedium2 minPYQ_2019
PhysicsMediumsingle choice
Assertion : A person standing on a rotating platform suddenly stretched his arms. The platform slows down. Reason : This happens as angular momentum is conserved.
Options:
Answer:
A
Solution:
On stretching arms, his moment of inertia (I) increases. As no torque has been applied, therefore constant. As increases, decreases.
Stream:AIIMSSubject:PhysicsTopic:RotationSubtopic:Angular momentum
⏱ 2mℹ️ Source: PYQ_2019
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