一道英文物理题目(英文其实很简单).求高手解答~~~~~~~~~~~~~
问题描述：
一道英文物理题目(英文其实很简单).求高手解答~~~~~~~~~~~~~
A 10-kg block is connected to a 40-kg block.The surface on that the blocks slide is frictionless. A force of 50N pulls the blocks to the right.
a) what is the magnitude of the acceleration of the 40-kg block?
b)what is the magnitude of the tension T in the rope that connects the two blocks?
答
40kg的木块的加速度为1m/s^2, 10kg和40kg中间的张力T(tension)是10N. 以下为解释： 把这两个物理作为一个系统,50N的力对这个系统做功,系统的加速度a=F/m=1m/s^2,则单个物体的加速度跟系统的加速度都为1m/s^2；而对重...