Question

How much power does it take to lift a 1,000 N load to a height of 10 m in 20 s?

Answer 1

Answer:

power =work/time

=force×dis/time

=1000×10/20

=500 watt

Answer 2

Answer:

Power is given by work done/time taken

Now, work done= mgh

Note that here, mass isnt given. Weight is given. So, mass and g have been multiplied already. Thus, work= 1000×h= 1000×10= 10000 J

Power= 10000/20 =500 watts

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