[填空题]
A sphere of radius 20.0 cm and mass d mluv lts,2qt31wh./mgj(1 f1.80 kg stal,* wl5 fxcxp7): mt,5igp*afzhntz, rts from rest and rolls without slipping down i:cxf)fl ptgwm *znpzht5 l ,*,a7x 5,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
