[填空题]
A sphere of radius 20.0 cm and mass 1.8mpu y-n-5bz 1u0 kd 2, h-x koixhj-if b8e1p1t9kg starts from rest and rolls without slippingxbde,12j9-8f - i 1ohkxtipkh 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
