Question

The formula for potential energy is mass x gravity x height. How much potential energy is in a 10 kg rock sitting on a cliff that is 5 meters high?

Answer 1

Answer:

490.5 J

Explanation:

m = Mass of rock = 10 kg

g = Acceleration due to gravity = 9.81 m/s²

h = Height from the ground = 5 m

The potential energy gives the energy that the body posseses due to its mass and height of the fall.

Potential energy is given by

$U=mgh$

$\Rightarrow U=10\times 9.81\times 5$

$\Rightarrow U=490.5\ J$

The potential energy of the rock which is at the given height is 490.5 J