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A girl of mass 40 kg climbs a rope 6 m long at constant speed in 15 seconds. What power she expands during the climb?
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A girl of mass 40 kg climbs a rope 6 m long at constant speed in 15 seconds. What power she expands during the climb?
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Oct 4, 2024
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A girl of mass 40 kg climbs a rope 6 m long at constant speed in 15 seconds. What power she expands during the climb?
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Gove
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Given,
Mass m=40kg
Height h=6m
Time=15s
Power=????
Let g= 10ms−2
Potential energy =m×g×h
=40×10×6J
=2400J
Power= Energyconsumed/Timetaken
Power= 2400J/15s
Power=160J/s
So power spent by girl is 160 watts
Moltarze
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Oct 8, 2024
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Moltarze
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