Question

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

Answer 1

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 Watt

Explanation:

Answer 2

Answer:

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