A Boy Of Mass 50 Kg Runs Up A Staircase Of 45 Steps In 9s. If The Height Of Each Step Of The Staircase Is 15 Cm, Find The Power Of The Boy.

Given Data:

Mass of body (m) = 50kg

Height of each step of the staircase = 45steps × 15 = 675cm = 6.75m

Time = 9s

δ=10m

Potential energy = mgh

By substituting the values:

= (50 * 10 * 6.75)

= 3375

Power of the body = Potentialenergy / Time

= 3375 / 9

= 375

Therefore, the power of the boy is 375W.

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