The 3-lb uniform rod BD is connected to crank AB and to a collar of negligible weight. A c...

The 3-lb uniform rod BD is connected to crank AB and to a collar of negligible weight. A couple (not shown) is applied to crank AB causing it to rotate with an angular velocity of 12 rad/s counterclockwise and an angular acceleration of 80 rad/s2 clockwise at the instant shown. Neglecting the effect of friction, determine the reaction at D.