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A machine which is 75 percent efficient,...

A machine which is 75 percent efficient, uses 12 joules of energy in lifting up a 1 kg mass through a certain distance. The mass is then allowed to fall through that distance. The velocity at the end of its fall is (in `ms^(-1)`)

A

`sqrt(24) ms^(-1)`

B

`sqrt(32) ms^(-1)`

C

`sqrt(18) ms^(-1)`

D

`3 ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
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