1.

Two girls, each of weight 400N climb up a rope through a height of 8m. We name one of the girls A and theother B. Girl A takes 20 s while B takes50 s to accomplish this task. What is thepower expended by each girl?

Answer»

Power= Force*Distance/Time

Power by A=400*8/20=1600 N/m^2

Power by B=400*8/50=640 N/m^2



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