問題詳情

8.A uniform solid sphere of mass M and radius R rotates with an angular speed ω about an axisthrough its center. A uniform solid cylinder of mass M, radius R, and length 2R rotates through anaxis running through the central axis of the cylinder. What must be the angular speed of the cylinderso it will have the same rotational kinetic energy as the sphere?
(A)2ω/5
(B)


(C) 4ω/5
(D)


(E)

參考答案

答案:D
難度:計算中-1
書單:沒有書單,新增