A boy weighing 350N climbs up 30 steps,each 20cm high in 1 minute.calculate the work done and the power spend
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HI there !!
Force = mg = 350 N
Height of 1 step = 20 cm = 0.2 metres
Height of 30 steps = 30 x 0.2 = 6 metres
Displacement = s = 6 metres
Work done [ in 1 min = 60 sec ] = Force x Displacement
= 350 x 6 = 2100 Joules
Power = Work done / Time
= 2100 / 60
= 35 Watts
Force = mg = 350 N
Height of 1 step = 20 cm = 0.2 metres
Height of 30 steps = 30 x 0.2 = 6 metres
Displacement = s = 6 metres
Work done [ in 1 min = 60 sec ] = Force x Displacement
= 350 x 6 = 2100 Joules
Power = Work done / Time
= 2100 / 60
= 35 Watts
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