"Nav" wrote

Sigh. Look you can say what you like but it is the imbalance of
force between the centrifigal and gravitational forces that causes
the two tides.

That's the explanation that you advocate. That is one out of several
explanation models.

Now you can a call that "differential gravity" but why? Doesn't
that lead to the confusion that is so apparent?

You are certainly confused. You don't seem to understand the
"Differential model". You claim that it doesn't explain the two bulges
when it clearly does. I like the model.

For the last time, gravity, as a perectly defined force, only acts
toward the center of the system, it cannot _by itself_ produce two
tides. If gravity alone could do it why is the rotation of the
system important (what happens in free fall?). Have a look at the
teaching site I posted for a clear simple explanation.

If the moon stopped its rotation around the earth and the earth and
the moon was "falling" toward each other, there would still be two
bulges.
Anyone who claims otherwise clearly haven't understood what is
happening.

Peter S/Y Anicula