A weight-lifter lifts a mass of 250 kg with a mass of 5000 N to height
5m
a) Find work done by weight - lifter
b)Calculate the work done by gravity,
c) Find the net -workdone
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Answered by
1
Answer:
1000 watt
Explanation:
Work=F×S×cosθ.
Given mass = 200 Kgf and distance is 2.5 m and angle is 180 degree and we know that cos 180 =-1.
We know that F=m∗g=200∗10=2000N−f
Hence W=2000∗2.5=5000Joule.
Power=work/time
P=5000/5=1000 Watt.
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Answer:
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