A thin ring of mass 10 kg is rolling on the horizontal ground such that its center of mass has a velocity of 2 m/s. How much work (in joules) needs to be done to stop it?

A thin ring of mass 10 kg is rolling on the horizontal ground such tha

1.	A thin ring of mass 10 kg is rolling on the horizontal ground such that its center of mass has a velocity of 2 m/s. How much work (in joules) needs to be done to stop it?
A.	40
B.	20
C.	10
D.	80
Answer» B. 20

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A thin ring of mass 10 kg is rolling on the horizontal ground such that its center of mass has a velocity of 2 m/s. How much work (in joules) needs to be done to stop it?

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