Question

If you perform 40 joules of work lifting a 10-N box from the floor to a shelf, how high is the shelf?

Answer 1

Answer : Height, s = 4 m

Explanation :

It is given that,

Work done, W = 40 J

Force applied on the box from the floor to a shelf, $F=10\ N$

We know that the work done is defined as the force applied on an object to produce a displacement on it.

Mathematically, it is written as :

$W=F\times s$

s is the height of the shelf

$s=\dfrac{W}{F}$

$s=\dfrac{40\ J}{10\ N}$

$s=4\ m$

So, the height of the shelf is 4 m.

Hence, this is the required solution.