Question

When 142 J of work is done in pushing a box horizontally 13.3m how much force is applied​

Answer 1

The force applied is 10.68 N

Explanation:

The work done by a force on an object is given by:

$W=Fd cos \theta$

where

F is the magnitude of the force

d is the displacement

$\theta$ is the angle between the direction of the force and of the displacement

In this problem we know:

W = 142 J

d = 13.3 m

$\theta=0^{\circ}$ since the force is applied horizontally, in the direction of motion of the box

So, solving for F, we find the magnitude of the force:

$F=\frac{W}{d cos \theta}=\frac{142}{(13.3)(cos 0)}=10.68 N$

Learn more about work:

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