1. The problem statement, all variables and given/known data 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 2. Relevant equations L = r x p L = mvr 3. 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!