A 10-kg uniform disk is placed in contact with an inclined surface and a constant couple M...

A 10-kg uniform disk is placed in contact with an inclined surface and a constant couple M is applied as shown. The mass of the uniform link AB is 5 kg and the coefficient of kinetic friction at D is 0.25. Knowing that the angular acceleration of the disk is 16 rad/s2 clockwise, determine (a) the magnitude of the couple M, (b) the force exerted on the disk at D.

Fig. P16.26