how is the power related to the speed at which a body can be lifted
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1
As we know P= w/t
if W=F×d
As d=s×t
Now , P=F×s×t /t
if W=F×d
As d=s×t
Now , P=F×s×t /t
Answered by
2
Power = work/time
work=force x displacement
force = mass x acceleration
acceleration=velocity/time
Therefore
Power=(velocity)*(mass)*(displacement) ÷ (time)*(time)
In the question
power,P=100W
velocity,v=1m/s
since time,t=1s
displacement, s=1m
acceleration,a=10m/s (acceleration to overcome gravity)
we have to find mass m
P=m×a×s÷t
100=m×10
m=10
work=force x displacement
force = mass x acceleration
acceleration=velocity/time
Therefore
Power=(velocity)*(mass)*(displacement) ÷ (time)*(time)
In the question
power,P=100W
velocity,v=1m/s
since time,t=1s
displacement, s=1m
acceleration,a=10m/s (acceleration to overcome gravity)
we have to find mass m
P=m×a×s÷t
100=m×10
m=10
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