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Homework Statement
The Attempt at a Solution
I did it like this:
[tex]\vec{L}_{B \ wrt \ Ground} = \vec{L}_{B \ wrt \ A} + \vec{L}_{A \ wrt \ Ground}[/tex]
[tex]\vec{L}_{B \ wrt \ A} = \vec{L}_{B \ wrt \ Ground}  \vec{L}_{A \ wrt \ Ground}[/tex]
so
[tex]\vec{L}_{B \ wrt \ A} = mwd^2 \  \ \frac{1}{4}mwd^2[/tex]
[tex]\vec{L}_{B \ wrt \ A} = \frac{3}{4}mwd^2[/tex]
why is my method wrong?
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