[填空题]
A sphere of radius 20.0 cm and mass uyked w+3 mw:31.80 kg starts from rest a (2td)hu 7sxcfprdz;0nd rolls without slipping do rp;tzd20dfx) h7c(us wn 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
