Answers

2016-03-28T10:13:54+05:30
Work done = force * displacement
force here means weight of the object = 9.8N
displacement = height
therefore work done = 9.8N * h meters 

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2016-03-28T18:33:12+05:30
The work done is equal to the potential energy of the object i.e mgh where g= gravitational constant=10 or 9.8
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