At the instant of the figure, a 1.4 kg particle P has a position vector r of magnitude 1.1 m and angle ?1 = 45° and a velocity vector v of magnitude 3.8 m/s and angle ?2 = 30°. Force F of magnitude 1.2 N and angle ?3 = 30° acts on P. All three vectors lie in the xy plane.
(a) What is the angular momentum of the particle about the origin? kg·m2/s
(b) What is the torque acting on the particle about the origin? N·m