For the Scotch Yoke shown find the angular acceleration alph

For the Scotch Yoke shown, find the angular acceleration, alpha, when the angle, theta, from the far right dwell point equals 60degree. The piston is moving to the right, applying a force of 200 lb to the yoke (link 3). The mass moment of inertia for the wheel I = 2.2 Lb-ft-s^2. The radius of the wheel from the center to the outside point pin A is 8 inches. (Watch units!!!) A) 60.6/s^2 B) 30.3/s^2 C) 52.5/s^2 D) 63.1/s^2

Solution

answer is B