A 20N force is applied to the control rod AB as shown Knowin

A 20-N force is applied to the control rod AB as shown, Knowing that the length of the rod is 225 mm and that alpha=25 degree, determine the moment of the force about point B by resolving the force into horizontal and vertical components.

Here the angle that the force makes with the rod = 65 - 25 = 40 degrees.

Now the moment about B = 20sin40 * 225 * 10^-3 = 2.892 N-m