Work, Power and EnergyMedium
Question
The weight of a person is 60 kg. If he gets10 calories of heat through food and the efficiency of his body is 28%, then up to what height he can climb ? Take g = 10 ms-2
Options
A.100 cm
B.1.96 cm
C.400 cm
D.1000 cm
Solution
Amount of energy utilised in climbing
mgh = 0.28 × 10 × 4.2
⇒ h =
= 1.96 × 10-2m = 1.96 cm
mgh = 0.28 × 10 × 4.2
⇒ h =
= 1.96 × 10-2m = 1.96 cmCreate a free account to view solution
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