An object of mass 12 kg is at a certain height above the gorund if the potential energy of the object is 480J find the height at which the object is withj respect to the ground Given, ` g = 10m//s^2`

Options

A. `2m`
B. `3m`
C. `4m`
D. `5m`

Answer

C

Explanation

Mass of the object, `m = 12 kg`,
potential energy, `E_(p) = 480 J`.
`E_(p) = mgh`
`480 J = 12 kg xx 10 ms^(2) xx h`
`h = (480 J)/(120 kg m s^(-2))=4m`
The object is at the height of 4 m.