Question

A man of mass 20 kg climbs up a ladder in 20 seconds.if the height of the ladder is 10 meter, how much power is used?

Answer 1

here m=20 kg, time taken =20 seconds, height = 10 m g=9.8
W = mgh
= 20*10*9.8
196J
power = work done / time taken
= 196/20
= 9.2 W ans



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