Question: In Figure, for torsional motion, complete the following tasks:
(a) Select coordinates, draw a free-body diagram for each disk, and develop the equations of motion.
(b) State the equations of motion in matrix form.
c) Determine the eigenvalues, natural frequencies, and eigenvectors given the following data: M1 = 200 kg, r1 = 200 mm, L = 3000 mm, G = 90 MPa, d = 75 mm, M2 = 200 kg, and r2 = 200 mm.