Question

8000j of work is done by a machine to lift a mass 100 kg vertically upwards Calculate the height the mass is lifted g=10ms^-2​

Answer 1

Answer:

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Answer 2

Here, m=100 kg,

h=10 m,

t=20 s

g=10 ms-2

The power of the crane is'

P=mgt/t

= (100kg)(10ms-2)(10m) / (20s)

=500 W.