Question

It took 10 joules to push a chair 2 meters across the floor. With what force was the chair pushed?

Answer 1

Answer:

5N.

Explanation:

Given:

Work Done(W)=10J.

and, Displacement(x)=2m.

To Find:

Force(F)=?

We know that:

W=Fxcos(@)

[Here direction of displacement of the chair is in direction of force applied]

so, @=0°

Now: W=Fxcos(0°)

or W=Fx (since cos(0°)=1)

or 10J=F×2m

or F×2m=10J

or F=(10/2)J/m

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or |F=5N|

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Answer 2

Answer:

Answer:

5N.

Explanation:

Given:

Work Done(W)=10J.

and, Displacement(x)=2m.

To Find:

Force(F)=?

We know that:

W=Fxcos(@)

[Here direction of displacement of the chair is in direction of force applied]

so, @=0°

Now: W=Fxcos(0°)

or W=Fx (since cos(0°)=1)

or 10J=F×2m

or F×2m=10J

or F=(10/2)J/m

======

or |F=5N|

======

Explanation:

Hope this answer will help you.