Here I got 3 kg and I got 2 kg and I'm pushing with 10 Newtons and I want to know what happens.

一个物体 3 千克,另一个 2 千克,现在我用 10 牛的力推它,我想知道接下来会怎样

耶鲁公开课 - 基础物理课程节选

kg is being pulled by the rope on the right with a force that I'm going to call T, which stands for tension.

千克的物体受到绳子向右的一个拉力,我称它为 T,也就是拉力的意思

耶鲁公开课 - 基础物理课程节选