A man spinning in free space changes the shape of his body, eg. by spreading his arms or curling up. By doing this, he can not change his
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A man spinning in free space changes the shape of his body, eg. by spreading his arms or curling up. By doing this, he can not change his

G1 Physics · Accepted Answer

Start from Newton’s laws for translation and rotation: ΣF=Ma and Στ=Iα. Use the geometrical constraint/energy relation stated in the question and solve for the required quantity. The result is angular momentumrotational kinetic energy.