4/74 For what value M of the clockwise couple will the horizontal component Ax of the pin reaction at A be zero? If a couple of that same magnitude M were applied in a counterclockwise direction, what would be the value of Ax?
4/77 For an 80-N squeeze on the handles of the pliers, de- termine the force F applied to the round rod by each jaw. In addition, calculate the force supported by the pin at A.
