1.

What is the capacity of a boy weighing 40 kg if he climbs a roof 600 cm high in 12 seconds?​

Answer»

(i) Force of gravity acting on the BOY = mg = 40 * 10 = 400 N (ii) Work is DONE by him = mgh = 40 * 10 * 0.08 = 32 J (iii) Power = Work / Time = 32 / 5 = 6.4 WattExplanation:



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