Angular momentum about an origin (O,O,O)

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SUMMARY

The discussion focuses on calculating the angular momentum of a particle with mass m moving along two specified trajectories about the origin O=(0,0,0). The relevant equations include L = r x p and L = mvr. For trajectory (a), the particle moves linearly, while trajectory (b) describes circular motion combined with linear motion along the z-axis. The user seeks clarification on the vector equation for momentum and how to apply the angular momentum formulas correctly.

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Homework Statement



Calculate the angular momentum about the origin O=(0,0,0) of a particle of mass m moving
along the following two trajectories:

(a) x(t)=vt y(t)=b z(t)=0
(b) x(t)=Rcos(wt) y(t)= Rsin(wt) z(t)=vt

Homework Equations


L = r x p
L = mvr


The Attempt at a Solution



I wasn't really sure to begin. I thought maybe I could do
L= m(vxr)
L=m ( (mv,0,0)x(vt...) Not sure what the vector equation for P is and also not sure what to do about the mass

Please help!
 
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Any help is GREATLY appreciated D: Kinda urgent
 

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