Answer :
Average power, P = change in energy (∆E)/ time taken(∆t).
Hence, ∆E = P∆t
→ mg∆h=P∆t
From given values,
→ m(10)(20) = 5000(60)
→ m = 1500 Kg
Hence, ∆E = P∆t
→ mg∆h=P∆t
From given values,
→ m(10)(20) = 5000(60)
→ m = 1500 Kg