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Fofino [41]
2 years ago
11

In which one of the following situations is zero net work done?

Physics
1 answer:
BabaBlast [244]2 years ago
3 0

Answer:

b) a horse pulls a wagon at a constant velocity

Explanation:

As we know that ,work done is the dot product of force vector and displacement vector.

W= F.d

W=work

F=Force

d=Displacement

We also know that

F = m a

m= mass ,a = acceleration

When velocity is constant then rate of change in the velocity will be zero,then we can say that acceleration will be zero.

When a= 0  Then F= 0

W= F.d  ( F=0)

W = 0

Therefore option b i correct because horse is going with constant velocity.

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