A man is riding uphill of slope 1 in 15 on a bike with
velocity 18 km/hr. If the total mass of the man and
bike is 150 kg, the power that the man must gen-
erate is
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Answer:
Given:-
Mass (m) = 150kg
Initial velocity (u) = 18km/hr = 5m/s
Final velocity (v) = 0
Time = 1hr 15min = 60×60+15×60 = 4500sec
To find:-
Power
By applying, K.E = 1/2mv^2
= 1/2×150×25
= 1875J.
By applying, Power = Work / Time
= 1875 / 4500
= 0.41666667W.
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