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A person standing on a rotating platform has his hands lowered. He suddenly outstretch his arms. The angular momentum |
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a) |
Becomes zero |
b) |
Increases |
c) |
Decreases |
d) |
Remains the same |
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A person standing on a rotating platform has his hands lowered. He suddenly outstretch his arms. The angular momentum |
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|
a) |
Becomes zero |
b) |
Increases |
c) |
Decreases |
d) |
Remains the same |
|
(d) When the hands outstretched, moment of inertia increases and angular velocity decreases so that angular momentum remains unchanged |