Finding the Cross Product for Angular Momentum

AI Thread Summary
To find the angular momentum of a particle, use the formula L = m(r × v), where r is the position vector and v is the velocity vector. The position vector is given as r = xi + yj + zk, and the velocity vector is the same. The cross product r × v can be calculated using standard vector operations. Once the cross product is determined, multiply the result by the mass m to obtain the angular momentum. This process effectively combines the vectors to yield the desired angular momentum value.
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Homework Statement


For the general case. I need help finding the cross product for the angular momentum. Say you have a particle at a position r= xi+yj+zk with a velocity of xi+yj+zk and a known mass. How do you find the angular momentum?


Homework Equations


L=mvr


The Attempt at a Solution



So I know how to find the cross product of r and v. It will be some xi+yj+zk. Then how do you find the angular momentum from there?
 
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Do a Google search on cross product. Wikipedia will show you how.
 
Since angular momentum is L = \vec{r} \times m\vec{v} and you know how to find \vec{r} \times \vec{v} just multiply by m
 
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