Question

A high jumper has a mass of 62 kg. She jumps to a maximum height of 2.3 m. If the acceleration due to gravity is 10 m/s2, calculate the gravitational potential energy of the jumper.

Answer 1

Gravitational potential energy?? so you use formula.

M*g*h

Answer 2

first of all we cannot find gravitational potential energy of system we can only find difference of potential energy by choosing a reference frame.

let us choose ground as reference level then:-

potential energy of high jumper = mgh-0

by putting m=62kg,a=10m/s and h=2.3meters

we get mgh=2.3*10*62