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Relative Velocity in 2D

A sphere roll...

Question

A sphere rolls without slipping on a rough horizontal surface with centre of mass speed $v_{0}$ . If mass of the sphere is M and its radius is R, then what is the angular momentum of the sphere about the point of contact?

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Solution

Angular moment about point of contact = $M V_{0} R$
because it appears first the center of mass making with speed $V_{0}$ .

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