[填空题]
A sphere of radius 20rs*3 kci3l* tu.0 cm and mass 1.8q j)loqkn;qhuy 3-*(a*2t9u ec t(zcn 0 kg starts from rest and rolls without slipping down a jnanhu2qk-y)ct;t(3z l 9couqe*( q *30.0 $^{\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?