PLEASE show how you got your answer! Thanks!
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By P = ∆W/∆t
=>as W = F.s = (mg).h
=>∆W = (mg)∆h
=>P = mg∆h/∆t
=>P = [550 x 9.8 x 5]/20
=>P = 1347.50 Watt
=>as W = F.s = (mg).h
=>∆W = (mg)∆h
=>P = mg∆h/∆t
=>P = [550 x 9.8 x 5]/20
=>P = 1347.50 Watt
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Work done in 20 seconds = 550*9.81*5=26977.5 J
Work per second = 26977.5/20=1348.875 J/s or Watts.
Work per second = 26977.5/20=1348.875 J/s or Watts.