[填空题]
A sphere of radius 20.0 cm and maj7+ y1uw,mrd 0p ni*fss 9vcfhc2o :fg-s 1.80 kg starts from rest and rolls without s-2g9cv ocffh :lipping down a 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?
Post time 2025-2-18 20:00:22
