The driveway gate is hinged at its right end and is to be pushed open with a force P. As t...

The driveway gate is hinged at its right end and is to be pushed open with a force P. As the gate is pushed open, where should the force P be applied (i.e., where should A be located) so that the force acting on the hinge due to the gate always acts along a line parallel to the gate during the entire time the gate is opening? Neglect the weight force acting on the gate, and model the gate as a uniform thin bar as shown below the photo.

Note: Concept problems are about explanations, not computations.

Figure P7.15