How much work w is done in lifting a 10 m chain over the side of a building if the chain has mass density 7 kg/m? Assume acceleration due to gravity is g = 9.8 m/s2.
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Explanation:
Here,
Force=density* acceleration due to gravity
=7*9.8
=68.6
Work done=Force * displacement
=68.6*10
=686 Joule
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