The mechanism shown is drawn to a certain scale Link 2 rotat

The mechanism shown is drawn to a certain scale. Link 2 rotates at a constant angular velocity omega_2 = 20 rad/s ccw. The velocity information is given below. Draw the acceleration polygon using an acceleration scale of 1 cm = 40 in/s^2 and then determine alpha_3 and a_C2. AC = 3.93 in. CD = 0.6\" AD = 4.0\" R= 1.35\" AB = 3.22\" omega_3 = 2.391 rad/s CCW V_C3 = 9.37 in/s Perpendicular to AC. V_C2C3 = 15.66 in/s Tangent to the curved slot at C. +O_a

Solution

The acceleration vectors are drawn at same scale in a direction perpendicular to the individual velocity vector and the closing side of the polygon gives the magnitude and dirction and angular position of the Resultant vector .

This is the approach involved in simplifying the situational problems related to the typical problems of the mechanisms.