Two girls A and B having weight of 500N climb up a large rope through a height of 10m. Girl A 50s whereas Girl B takes 20s to accomplish the task. Find the work done and who has more power?
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GIRL A (work done)
Mass(m)=500N
Height(h)=10m
Time=50s
Work=Force×displacement
W = mg×h
W=500×10
W= 5000 Joules
GIRL B (work done)
M= 500N
H=10m
T=20s
W=F×S
W=mg×h
W=500×10
W= 5000 Joules
GIRL A (power)
Power= Work/Time
P= W/T
P= 5000/50
P= 100 Watts
GIRL B (power)
P=W/T
P= 5000/20
P=250 Watts
Therefore girl B has more power.
Step-by-step explanation:
Just so uk force is equal to mass multiplied by gravitational constant which can be taken either as 10 when nothing is mentioned about how much the gravitational constant has to be taken as. It actually is 9.8. Make sure to convert the mass into Newton by multiplying it with 10 or 9.8
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