_ A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec. The work required to stop the hoop is$?

_ A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floo

1.	_ A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec. The work required to stop the hoop is$?
A.	2 J
B.	4 J
C.	6 J
D.	8 J
Answer» C. 6 J

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_ A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec. The work required to stop the hoop is$?

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