[填空题]
A sphere of radius 20.0ro y3m md9x8)5aumzg,,qykn; 4 cr (.yotk/p bb 6pnbvz7 (67qx;cotmcm and mass 1.80 kg starts from rest and rolls without slipping down a 37z7 /c;t.vmqx( kc 4rt6opb n(bpyb o60.0 $^{\circ} $ incline that is 10.0 m long. (a) Calculate its translational and rotational speeds when it reaches the bottom. $v_{CM}$ = $\omega$ = $rad/s$ (b) What is the ratio of translational to rotational KE at the bottom? Avoid putting in numbers until the end so you can answer: (c) do your answers in (a) and (b) depend on the radius of the sphere or its mass?