How much work must be done on the hoop to stop it

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Q. A man exerts a 328-N force to move a box across a 3.55-m patch of ice. How much work does he do on the box?

Q. A 120 kg hoop rolls along a horizontal floor so that its center of mass has a speed of 0.150 m/s. How much work must be done on the hoop to stop it?

Reference no: EM1355501

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