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Question
A man spinning in free space changes the shape of his body e.g. by stretching his arms or curling up then, which of the following physical quantity will remain constant
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Solution
The correct option is B Angular momentum
When a man spinning changes his position of body by spreading arms or curing up his angular momentum does not charge as there is no external torque, by conservation of angular momentum. But his moment of intertia, angular velocity changes.Hence,option (B) is correct answer.
When a man spinning changes his position of body by spreading arms or curing up his angular momentum does not charge as there is no external torque, by conservation of angular momentum. But his moment of intertia, angular velocity changes.
Hence,
option (B) is correct answer.
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