Answer:
The gravitational potential energy of a 1 kg book, resting 1 meter above the ground on a bookshelf is 9.8 J.
What is potential energy?
Potential energy of body is the energy generated by virtue of the position of the body. Whereas kinetic energy is generated by virtue of its movement.
Potential energy and kinetic energy together called as mechanical energy. The potential energy p is mathematically expressed as p = mgh. Where g s gravity, h is height and m is the mass.
Gravitational potential energy is mass times distance times the acceleration of gravity. In simple terms it is
[tex]$m^* g * h$[/tex]
or
mgh
When [tex]$m=1$[/tex]
[tex]$\begin{aligned}& h=1 \\& g=9.8\end{aligned}$[/tex]
The gravitational potential energy is [tex]$9.8 \mathrm{~J}$[/tex].
[tex]$J=$ joules (unit of energy)[/tex]
How do you calculate gravitational potential energy per kilogram?
For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters. Notice that gravitational potential energy has the same units as kinetic energy, kg m2 / s2.
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