Question

Calculate the power used by a 40kg man if he climbs a 6m tall ladder in 15 seconds​

Answer 1

(i)

Force of gravity acting on the boy = mg

= 40 * 10

= 400 N

(ii)

Work done by him = mgh

= 40 * 10 * 0.08

= 32 J

(iii)

Power = Work / Time

= 32 / 5

= 6.4 Watt

Step-by-step explanation:

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