a man has power of 90 w and mass 60kg runs up a staircase in 40 seconds.if each step of staircase is 20cm high,calculate the number of steps
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Given :
Power = 90 W
Mass = 60 kg
Time = 40 sec
Height = ?
Power = Work done/Time
P = mgh/t
90 = (60×10×h)/40
h = 36/6
h = 6 m
Number of staircase = 6 m/20 cm
= 600 cm/20 cm
= 30
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Power = 90 W
Mass = 60 kg
Time = 40 sec
Height = ?
Power = Work done/Time
P = mgh/t
90 = (60×10×h)/40
h = 36/6
h = 6 m
Number of staircase = 6 m/20 cm
= 600 cm/20 cm
= 30
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Kak1234:
This answer is good!!!!
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