Rotational MotionMedium
Question
A person is standing on the edge of a circular platform, which is moving with constant angular speed about an axis passing through its centre and perpendicular to the plane of platform. If person is moving along any radius towards axis of rotation then the angular velocity will : -
Options
A.decrease
B.remain unchanged
C.increase
D.data is insufficient
Solution
Moment of inertia decreases, then ω increases.
From the angular momentum conservation
From the angular momentum conservation
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