253-254 Equivalent single force to replace a force and a couple
Problem 253
In Fig. P-253 a system of forces reduces to downward vertical force 400 lb through A plus a counterclockwise couple of 800 lb·ft. Determine the single force that will produce an equivalent effect.
![253-point-a-xy-plane.gif](/sites/default/files/reviewer-mechanics/253-point-a-xy-plane.gif)