Question

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Prem starts from position A and pushes a pram through a distance of 2 m in the east, then turns towards north and pushes it through a distance of 3.5 m. He then pushes the pram to some distance to return to point A. If he applies a force of 5 N on the pram, calculate the work done by him.
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Answer 1

QUESTION:-

Prem starts from position A and pushes a pram through a distance of 2 m in the east, then turns towards north and pushes it through a distance of 3.5 m. He then pushes the pram to some distance to return to point A. If he applies a force of 5 N on the pram, calculate the work done by him.

GIVEN:-

• Prem starts from position A and pushes a pram through a distance of 2 m in the east .
• then turns towards north and pushes it through a distance of 3.5 m.
• He then pushes the pram to some distance to return to point A.
• Force applied=5 N

TO FIND:-

The work done

EXPLANATION:-

We know that:-

$\boxed{\bf\;Work\;done(W)=force(N)\times Displacement(s)}$

Force=5 N   (given)

Displacement :-

Since prem reached the place where he started i.e. Position A.

So the displacement is 0

Since we know displacement and force let put it in the formulae

Work done(W)=5×0

Word done(W)=0

So the work done by prem is 0 .

Answer 2

Explanation:

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