a man whose mass is 50 kg climbs up 30 steps of the stairs in 30 seconds if each step is 20cm high calculate the power used in climbing the stairs.

a man whose mass is 50 kg climbs up 30 steps of the stairs in 30 secon

1.	a man whose mass is 50 kg climbs up 30 steps of the stairs in 30 seconds if each step is 20cm high calculate the power used in climbing the stairs.
Answer» Mass, m = 50Kg height, h = 30 × 20 = 600cm = 6m acceleration due to GRAVITY, g = 9.8m/s² time TAKEN, t = 30s power used = ? work DONE, W = m×g×h = 50 × 9.8 × 6 = 2940J. Power = Work Done/Time taken = 2940/30 Power = 98Watt

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a man whose mass is 50 kg climbs up 30 steps of the stairs in 30 seconds if each step is 20cm high calculate the power used in climbing the stairs.

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