Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO7
6 二力平衡Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO牛顿第一定律的内容是什么
一切物体在没有受外力作用时,总保持静止状态或匀速直线运动状态复习回顾Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO做匀速直线运动的小汽车NG牵引力阻力Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO•如果作用在物体上的力只有两个,且物体保持静止或匀速直线运动状态,我们称二力平衡
GN 放在讲台上的粉笔盒Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO探究:二力平衡的条件Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO一、二力平衡的条件•作用在同一物体上的两个力,如果大小相等、方向相反,并且在同一条直线上,这两个力就彼此平衡
同体 等值 反向 共线Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO生活中的二力平衡例子:两人推门Presente