a 60kg person climbs stairs of total height 20m in 2 min. calculate the power delivered
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Answered by
25
60*20 divided by 120
= 1200/120 = 10 WATT
= 1200/120 = 10 WATT
Answered by
13
Power delivered is 100J/s.
Power delivered is calculated by the formula (work done / time).
Work done is calculated by change in potential energy.
Change in potential energy is given by -> ∆U = mgh2-mgh1
Since H1 is zero, thus mgh1 is zero.
Mgh2 = 60*10*20
Mgh2 = 12000
Change in potential energy ∆U = 12000.
Work done is equal to change in potential energy.
Time = 2 minute = 120 seconds.
Power delivered = work done / time
Power delivered = 12000/120
Thus, power delivered will be 100J/s.
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