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## Homework Statement

Show that [ Lk , r^2] = 0

## Homework Equations

## The Attempt at a Solution

know that L=r x p=r x(-ih(bar)V)

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- Thread starter jc09
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- #1

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Show that [ Lk , r^2] = 0

know that L=r x p=r x(-ih(bar)V)

- #2

Cyosis

Homework Helper

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Lets write it like this [Lz,r^2]=[Lz,x^2+y^2+z^2]=[Lz,x^2]+[Lz,y^2]+[Lz,z^2]. Can you work out these three commutators?

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