If a man of mass 70kg climbs up a mountain of height 30m in 5 minutes, what is his power?
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Explanation:
m=70kg,g=10m/s 2
h=30m
t=5mint
Work W=mgh=70×10×30=21000J
Time t=5mt=5×60=300s
power p= tw = 300x 21000
=70W
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