Mechanics Homework 5-3 232 - Moment of a force about points O and B Name_______________

Problem 5-3 In Fig. P-231, the moment of a certain force F is 180 ft·lb clockwise about O and 90 ft·lb counterclockwise about B. If its moment about A is zero, determine the force.

F = 75 lb downward to the right at $$\theta_x$$ = 36.87° and x-intercept at (4, 0)