So now I will put in the mass of the Earth here.
这样我就又考虑,到了地球的质量。
You substitute in there the mass of the Earth, which is six times 10 to the 24 kilograms.
这里用,地球的重力替代,≈6乘以10的24次方。
Well, that's completely trivial, you would say, because it is one-half * of the mass of the Earth times the orbital speed squared.
也许你会说,这是,完全没有意义的,它等于1/2m地,轨道速度的平方。
Other is gravitational mass, which is the measure of how much you're attracted to the Earth.
另一个是引力质量,它可以用来衡量地球对物体引力的大小
You cannot tell the mass, because what you are doing now is appealing to the notion of mass as something that's related to the pull of the Earth on the object.
你无法测出质量,因为你现在所做的是把质量,用地球对物体的引力给替代了
应用推荐