Question

How much power is needed to lift a mass of 15kg to a distance of 3m in 30s?

Answer 1

Answer:

power =work /time

work = force ×displacement {force= mg}

hence W = 15 kg×10ms^2 ×3m

W = 450joule

now power :

P = 450J/30 sec

P = 15 J/sec

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