Question

A engine generates the power of 10 kw. Calculate the time taken by it to lift a 200 kg mass

Answer 1

Answer:

work done by the machine = mgh

                                             = 200.40.10

                                             =80000J

 given power= 10kw

                   = 10×1000 W

power= work÷time

therefore time = work ÷power

                       =80000÷10000

                          = 8 seconds

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