# Homework Help: Calculate the energies of the six lowest states

1. Aug 9, 2010

### acusanelli

1. The problem statement, all variables and given/known data

Suppose that a particle of mass m is confined to move in the x-y plane in a 2-dimensional box of length Lx = L and LY = ½ L. Calculate the energies of the six lowest states.

2. Relevant equations
not sure to set up this problem?

3. The attempt at a solution
the most I can get is
E = (h^2π^2(n1^2+.5n2^2))/ 2mL^2
E = (h^2π^2)/ mL^2
and I dont think this is right

2. Aug 9, 2010

### nickjer

Why do you have two energy equations? You know how to separate the wavefunction and solve for it in 2 dimensions. What can you say about the total energy after you separated the variables?

3. Aug 9, 2010

### acusanelli

thats because I dont know how to set the problem up, i pulled those equations out of the book and am not sure what im doing

4. Aug 9, 2010

### nickjer

You should read how the first equation you listed was derived. That way you can reproduce it for your problem.