# How much work does it take to raise a 16 kg  weight 21 m ?

Dec 9, 2015

$3292.8 J$

#### Explanation:

if we take the ground level as the zeroth level of gravitational potential energy, then the potential energy that get stored in the object when you lift it $21 m$ is the work you should do.

$W = m g h$
where W represents the work you should do..

$W = 16 k g \cdot 9.8 m {s}^{\text{-2}} \cdot 21 m$

$W = 3292.8 J$