A MAN WHOSE mass is 50 kg climbs up 30 steps of a stair in 30 secs, if each step is 20 cm high, then calculate power consumed in climbing upstairs? (pls solve both numericals urgently )
Answers
Answered by
293
m=50 kg
t=30sec
h=20/100 X 30=6
P=W/t
work done=mgh
therefore,P=mgh/t (g=10m/s^2)
=(50*10*6)/30
=100
hence P=100
t=30sec
h=20/100 X 30=6
P=W/t
work done=mgh
therefore,P=mgh/t (g=10m/s^2)
=(50*10*6)/30
=100
hence P=100
Answered by
121
mass = 50kg
time taken = 30 sec
steps =30
each height =20cm =0.2m
so, the total height = 6m
now, power =work / time ...(1)
work = force * distance ...(2)
and force = weight = mg = 50kg * 10m/s² = 500 N ...(3)
now, putting the value of (2) and (3) in (1)
power = 500 * 6 / 30
power = 3000 / 30
∴power = 100 W
time taken = 30 sec
steps =30
each height =20cm =0.2m
so, the total height = 6m
now, power =work / time ...(1)
work = force * distance ...(2)
and force = weight = mg = 50kg * 10m/s² = 500 N ...(3)
now, putting the value of (2) and (3) in (1)
power = 500 * 6 / 30
power = 3000 / 30
∴power = 100 W
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