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A block of mass 30.0 kg is being brought...

A block of mass 30.0 kg is being brought down by a chain. If the block acquires as speed of `40.0 `cm/s` in dropping down 2.00 m ,find the work done by the chain during the process.

A

586 J

B

590 J

C

596 J

D

582 J

Text Solution

Verified by Experts

The correct Answer is:
`(1)`
Here `W_(c) = 30 xx 10 xx 2 = 600 J`
Now `W_(c) + W_(NC) = Delta KE `
`600 + W_("chain") = 1/2 xx 30 xx0.9 xx0.4`
`therefore W_("chain") = 600 - 24 = 586 J`
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