# Kinetic energy of electron & energy states

## Homework Statement

Use the relationship kinetic energy E = p^2/2m to show that the energy $E_{0}$ of an electron of mass m in its lowest energy state is given by $E_{0}$ = h^2/8mL^2

## Homework Equations

E = p^2/2m

$E_{0}$ = h^2/8mL^2

## The Attempt at a Solution

I've stared at this for far too long, googled it to death as well as checked through all my course materials and I can't seem to get started with it. Any ideas at all would be welcome.

Kognito