# What is the gravitational potential energy of a  4 kg object on a shelf  2/5 m  high?

$P E = 15.68 \text{ }$joules

#### Explanation:

formula for potential energy PE

$P E = m g h$

where $m = m a s s , g = \frac{9.8 m}{{\sec}^{2}} , h = h e i g h t$

$P E = 4 \left(9.8\right) \left(\frac{2}{5}\right)$

$P E = 15.68 \text{ }$joules

God bless....I hope the explanation is useful.