a weightlifter raises a 200-kg barbell with of 3 m/s. how much force does the weightlifter use to raise the barbell?
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Answered by
1
Answer:
It would be 600 because mass • acceleration
Answered by
1
Answer:
Mass , m=200kg
Height , h=2m
Acceleration due to gravity , g=3m/s
2
a) Potential energy =mgh=3920J
b) Work done against gravity = potential energy gained by the weight
Therefore , work done ,
W=mgh=3920J..
39027
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