物理：受力分析.在线等!.为什么不能插入图片.Anelectricmotorturnsaflywheelthroughadrivebeltthatjoinsapulleyonthemotorandapulleythatisrigidlyattachedtotheflywheel,asshowninFigureP10.37.Theflywheelisa

Question

物理：受力分析.在线等!.为什么不能插入图片.
An electric motor turns a flywheel through a drive belt that joins a pulley on the motor and a pulley that is rigidly attached to the flywheel, as shown in Figure P10.37. The flywheel is a solid disk with a mass of 80.0 kg and a radius of 0.625 m. It turns on a frictionless axle. Its pulley has much smaller mass and a radius of 0.230 m. If the tension in the upper (taut) segment of the belt is 135 N and the flywheel has a clockwise angular acceleration of 1.67 rad/s2, find the tension in the lower (slack) segment of the belt.

Answer 1

不计轴的摩擦,那飞轮和pully（滑轮?觉得这里应该是带轮）受到的扭矩就来源于作用于带轮的摩擦力,就是带的张力差,乘以带轮半径可得扭矩,然后根据牛顿第二定律列方程就可以了.爪机打字困难,分析到这里,有疑问追问.