4. A cylinder of mass 10.0 kg rolls without slipping on a horizontal surface. At the instant when it
問題詳情
4. A cylinder of mass 10.0 kg rolls without slipping on a horizontal surface. At the instant when its center of mass has a speed of 10.0 m/s, what is the cylinder’s total energy? (A) 200 J (B) 250 J (C) 500 J (D) 750 J (E) 1000 J