A stationary disk of 300-mm radius is attached to a pin support at D. The disk is held in...

A stationary disk of 300-mm radius is attached to a pin support at D. The disk is held in place by the brake ABC in contact with the disk at C. The hydraulic actuator BE exerts a horizontal a 400-N force on the brake a. B. The coefficients of friction between the disk and the brake are μs= 0.6 and μk = 0.5. What couple must be applied to the stationary disk to cause it to slip in the counterclockwise direction?