Question

answer this 3 questions

Answer 1

1 horse power= 786W

1 KWh = 1000W×1h
= 1000W× 3600sec.
= 3600000 J
= 3.6×10^6 J

positive work done always goes in the same path whereas negative work done goes in the opposite direction.

energy acquired = m×g*(gravitional force)* h
= mgh
P.E= mgh

hope it helps.

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