A hook of radius 2m weighs 100kg. It rolls along a horizontal floor so that its centre if mass has a speed of 20cm/s. How much work has to be done to stop it? a) 5 J b) 6 J c) 2 J d) 4 J
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A hook of radius 2m weighs 100kg. It rolls along a horizontal floor so that its centre if mass has a speed of 20cm/s. How much work has to be done to stop it?
a) 5 J
b) 6 J
c) 2 J
d) 4 J
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