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A weightlifter lifts a weight off the gr...

A weightlifter lifts a weight off the ground and holds it up, then

A

work is done in lifting as well as holding the weight.

B

no work is done in both lifting and holding the weight.

C

work is done in lifting the weight but no work is required to done in holding it up.

D

no work is done in lifting the weight but work is required to be done in holding it up.

Text Solution

Verified by Experts

The correct Answer is:
C
When a weightlifter lifts a weight work done by the lifting force
`W_1=Fdcos0^@=Fd`
Work done in holding it up `W_2 =0` (because displacement is zero)
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