A body of mass 40 kg clims a staircase of 30 steps, each of 0.2m height, in 30 s. Calculate power (g = 9.8 m/s⁻²)
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M =40kg
h=30×0.2
=6m
t= 30s
g=9.8
W=FS
F=mg
S=H
W=mgh
= 40 ×6×9.8
= 2352
P=W÷T
P= 2532÷30
=78.4 Watt
Ans: Power is 78.4watt
h=30×0.2
=6m
t= 30s
g=9.8
W=FS
F=mg
S=H
W=mgh
= 40 ×6×9.8
= 2352
P=W÷T
P= 2532÷30
=78.4 Watt
Ans: Power is 78.4watt
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