Draw the Free body diagram and force analysis. Stress and deflection analysis for one of the arms of the mechanism including the self-weight after deciding its cross section and checking it. Mohr Circle for the stress state at your max stress point. Design revolute joint pins using two of the static design criteria (take FS = 2) Design revolute joint pins using two of the dynamic design criteria (take FS = 2 and assume your dynamic conditions like speed, life expectancy, etc. with stated reasons). Fig. 17 A rack turns the gear sector.