How much work does it take to raise a 78 kg weight 5 m ?

1 Answer
Dec 15, 2015

3800"J"

Explanation:

First we will note that in this case the work done raising the weight will be converted entirely into gravitational potential energy.

The gravitational potential energy of the weight when it has been raised 5 "m" is equal to mgh which in this case is equal to

3825.9 "J"

Considering that we should have two significant digits, our final answer will be

3800 "J"