Theory of Mechanism and Machine I

Using graphical method determine the torque, \(T_{12}\), that must be applied to link 2 to maintain static equilibrium at the posture shown in figure. \(R_{AO_2}=200\text{ mm},R_{BA}=400\text{ mm},R_{CA}=R_{O_4O_2}=700\text{ mm}\), and \(R_{CO_4}=350\text{ mm}\).