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An electric motor in a crane while lifti...

An electric motor in a crane while lifting a load produces a tension of `4000 N` in the cable attached to the load. If the motor is winding the cable at the rate of `3ms^(-1)`, the power of the motor espressed in kilo watt units must be

A

`4`

B

`3`

C

`12`

D

`6`

Text Solution

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The correct Answer is:
C
`P = vec(F).vec(V)`
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