Chapter 9, Problem 52P

& Two uniform disks are made from the same material and nave equal masses. The radius of disk B is three times larger man the radius of disk A. The disks touch each other and rotate at constant angular speed without skidding (Figure P9.52). Determine (a) the ratio of the disks thicknesses $d_{\text{B}}\text{/}{d}_{\text{A}}\text{,}$

(b) the ratio of the disks' angular velocities $w_{\text{B}}/w_{\text{A}},$

(c) the ratio of the disks' rotational inertias $I_{\text{B}}/I_{\text{A}}\text{,}$

(d) the ratio of the disks' rotational momenta $L_{\text{B}}/L_{\text{A}},$ and (e) the ratio of the disks' rotational kinetic energies $K_{\text{rot**\#x00A0;B}},/K_{\text{rot A}}.$