The uniform thin pin-connected bars AB, BC, and CD have masses mAB = 2.3 kg, = 3.2 kg, and...

The uniform thin pin-connected bars AB, BC, and CD have masses mAB = 2.3 kg, = 3.2 kg, and mCD = 5.0 kg, respectively. Letting R = 0.75 m, L = 1.2 m, and H = 1.55 m, and knowing that bar AB rotates at a constant angular velocity ωAB = 4 rad/s, compute the angular momentum of bar AB about A, of bar BC about A, and bar CD about D at the instant shown.

Figure P8.52