A mother's love is like the sea, accommodate infinite, a mother's love is like day, without a trace, endless blessing world all mother, and my mom, happy mother's day!
母爱似海,容纳无限,母爱似天,无边无迹,祝福天底下所有的母亲,还有我的妈妈,母亲节快乐!
You cannot have a spring pulled only at one side, because then it will then accelerate with infinite acceleration in that direction.
你不可能对弹簧只施加一边的拉力,因为那样的话弹簧就会以无穷大的加速度加速,就在这个方向上
We're gonna have a so called a loop, an infinite loop and you actually experience this in the real world.
我们将会做一个循环,一个无限循环,你会在这个,真实世界里体验它。
So, a massless body cannot have a net force on it, because the acceleration of the rope cannot be infinite.
所以没有质量的物体不会受到力,因为绳子的加速度不可能是无穷大
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