高校问答wildlife可数吗:physics(a litte comfusing)
来源：百度文库 编辑：高校问答 时间：2024/07/06 17:05:52
a light string joins two objects of masses 2kg and 4kg. The object of mass 2kg is on a smooth horizontal table and the 4kg object hangs over the edge of the table. What is:
(a) the tension in the string;
(b) the acceleration of the objects?
(a) the tension in the string;
(b) the acceleration of the objects?
a) T=4kg*9.8N/kg=39.2N
b) 9.8N/kg