Question on: SS1 Physics - Work, Energy, And Power
A man who has a mass of 70kg climbs a staircase consisting of 50 steps in 30 seconds. Each step is 0.2 metres high. What is the power output of the man?
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Power = (Work / Time) = (Force x Distance / Time)
Power = (mass x gravity x height) / time
Power = (70 x 9.8 x 50 steps x 0.2 meters) / 30secs
Power = (6,860)/30
Power = 228.67 Watts
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