Silly question about Cross-Product


by Saladsamurai
Tags: crossproduct, silly
Saladsamurai
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#1
Mar3-08, 01:09 PM
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I just forget the rule here.

I am finding angular momentum by using r x mv

If I am using the determinant to evaluate r cross v, where does the mass come in? Do I just mulyiply the result of r cross v by m?

Or do I distribute m to my vector v and then use those values inside the determinant?
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CompuChip
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#2
Mar3-08, 02:19 PM
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It doesn't matter. m is just a number, so
r x (m v) = (m r) x v = m (r x v)


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