Question

Define P.E.

 Obtain an expression for gravitaonal P.E of an object of mass m at a height h​

Answer 1

Answer:

mgh

Explanation:

P.E is the abbreviation of 'Potential Energy'. Potential energy is the energy which a body has due to how it is placed. For example, a spring will have more potential energy if it is stretched or compressed rather than left unstretched.

Now, gravitational potential energy is (Gravitational Force) x (displacement)

Gravitational Force = mg

displacement = h

So: Gravitational P.E = mgh