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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Answered by
14
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
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
Answered by
3
Answer:
Explanation:
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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