1) Suppose that the four-bar linkage in Fig. is being used as the driving mechanism of a manually operated pump. In the position shown, the handle is being pulled left with force Fin. Meanwhile, the pressure difference across the piston in the cylinder is resisting the movement by a force equal and opposite to Fout. What is the mechanical advantage of this device in the position shown? (The piston rod is instantaneously perpendicular to link 4.) Fin Fout rin Tout B. Ao