Question

How much work is needed to push a 5kg bookshelf 4.52 m with the force of 15.3N

Answer 1

The work done is 69.2 J

Explanation:

The work done by a force when pushing an object is given by

$W=Fd cos \theta$

where

F is the magnitude of the force

d is the displacement of the object

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

In this problem, we have:

F = 15.3 N is the force applied

d = 4.52 m is the displacement of the bookshelf

$\theta=0$ (assuming the force is applied in the direction of motion)

Therefore, the work done is:

$W=(15.3)(4.52)(cos 0)=69.2 J$

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