A solid rectangular parallelepiped of mass m has a square base of sidea and a length2a. Kn...

A solid rectangular parallelepiped of mass m has a square base of sidea and a length2a. Knowing that it rotates at the constant rateω about its diagonalAC’ and that its rotation is observed from A as counterclockwise, determine (a) the magnitude of the angular momentum HC; of the parallelepiped about its mass centerG, (b) the angle that HG; forms with the diagonalAC’.