Wrote his equation, for otherwise it is meaningless. We put two objects together, their masses add. That mass is constant, the same all the time, and that, further, when Isn’t really, but we shall start out with the Newtonian approximation First, that the mass of an object is constant it Thus at the beginning we take several things for “law.” Later we may have to come back and study in greater detailĮxactly what each term means, but if we try to do this too soon we Such as this, we use many intuitive ideas, implications, andĪssumptions which are at first combined approximately into our Now there are several points to be considered. Law may be written mathematically this way: Now the momentum of an object is a product of two In this way we find a certain quantity of mass for every We may measure mass, for example, by swinging an object in a circle atĪ certain speed and measuring how much force we need to keep it in theĬircle.

We use the term mass as a quantitative measure of inertia, and Mike The Feynman Lectures on Physics New Millennium Edition Your time and consideration are greatly appreciated.

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