A person of mass 60 kg reaches a height
of 5m in 30 seconds. Find the power used by the
person (g = 10 m/s2)
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Answer: 100W
Explanation:
Mass-60kg
Height-5m
Time taken-30s
Acceleration due to gravity-10m/s²
Therefore force exerted by the person= mass×gravity = 60×10=600N
We know,
Power= (force × height) ÷ time
=(600×5) ÷30
=100W
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