PeroK's latest activity

Now we have reached the nub of the matter. Unless we use your preferred terminolgy and look at physics your preferred way, and share...

And who are we to argue with the late Arnold B Arons?

The only bending over backwards is when uttering the phrase "action-reaction" instead of "Third-Law pair of forces". The former is a...

As an example, imagine we have a financial spreadsheet. Let's say column A is the starting balance, column B is a deposit and column C...

You can choose whichever convention you like. You just have to be careful to be clear about the convention you use and be careful to...

@Green dwarf did we not go through all of this with you ten years ago...

The simplest example is an object moving in uniform circular motion. The force and acceleration are entirely centripetal. That is to...

I would like to expalin it in the case of ellipse orbit of planets as shown in the figure below. You see that F has components that is...

They can do what they like. As long as it adds up.

##\Delta m## is generally defined as the change in ##m##. If the mass reduces, then ##\Delta m## is negative. It's a common point of...

This site focuses on mainstream science. We can't discuss personal theories.

First, we need a definition of what it means for a manifold to be spherically symmetric. There is a formal definition here, in terms of...

I have always been wondering how such a banal thing can generate endless discussions.

How does dropping the arbitrary and irrelevant cause & effect assignment make applying Newton's 3rd Law more difficult? If anything, it...

Perhaps you'll find what you are looking for here. This site focuses on established cosmology, and personal theories are not up for...