Solve the below problem:
Q: A system consists of three particles A, B, and C. We know that mA = 1 kg, mB = 2 kg, and mC = 3 kg and that the velocities of the particles expressed in m/s are, respectively, vA = 3i - 2j + 4k, vB =4i + 3j, and vC = -2i + 5j - 3k. Determine the angular momentum HO of the system about O.