Question

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

1 m
2 m
10 m
100 m

Answer 1

Given details:

Work done in lifting a box = 10J = 10 Nm

Force imparted on box = 10 N

Solution:

We know that, Force along a given distance is nothing but the work done.

So, Height (Distance) = Work done / Force  

Therefore, Distance = 10 /10 = 1 meter

So, the shelf is 1 m high.

Hope it helps.