The T bar consists of two thin rods, OA and BD, each of length L = 1.5 m and mass m = 12 k...

The T bar consists of two thin rods, OA and BD, each of length L = 1.5 m and mass m = 12 kg, that are connected to the frictionless pin at O. The rods are welded together at A and lie in the vertical plane.

Figure P7.19

If the rods are released from rest in the position shown, determine the force on the pin at O as well as the angular acceleration of the rods immediately after release.