Question

What is the gravitational potential energy of a `1 kg` object on a shelf `2/9 m` high?

Answer 1

`~~2.18 Nm`

Explanation:

Gravitational potential energy is calculated from the produce of the object's mass, it's height above ground, and the acceleration due to gravity `g`.
`GPE = m*g*h`

In this example `GPE = 1*9.8*2/9`
`~~2.18 Nm`