For the crank-shaper mechanism shown in Fig. 2.14, graphically determine the length of stroke and the time ratio of advance to return. Use a scale of 3 in. = 12 in., and let O2O4 = 16 in., O2A = 6 in., O4B = 26 in., BC = 12 in., and the distance from O4 to the path of C = 25 in.