Solve the below problem:
Q: A system consists of three identical 9-kg particles A, B, and C. The velocities of the particles are, respectively, vA = vAj, vB = vBi, and vC = vCk. Knowing that the angular momentum of the system about O, expressed in kg · m2/s is HO = -1.8k, determine
(a) The velocities of the particles,
(b) The angular momentum of the system about its mass center G.
