Now tell me what this means.
Nobody has to see a substance called inertia, or be able to smell inertia. They just need to read about the properties of objects which are associated with usage of that word.
What properties?
I could just as accurately say:
"
Nobody has to see a substance called pressure, or be able to smell pressure. They just need to read about the properties of objects which are associated with usage of that word."
or
"
Nobody has to see a substance called velocity, or be able to smell velocity. They just need to read about the properties of objects which are associated with usage of that word."
Inertia is a measure of the effort that must be put to change the
velocity of an object, that is its
acceleration.
For an object moving in a
straight line,
Inertia is just the
mass (symbol
m) of the object.
For a
rotating object (like a flywheel),
Inertia is a measure of the effort that must be put to change the
angular velocity of the object,
and this rotational inertia is called the
moment of inertia (symbol
I).
If you weren't allergic to equations or maths, I could refer you to:
Rotational-Linear Parallels,where you would find that, in the absence of other forces (such as friction)
force = mass x acceleration and
torque = (moment of inertia) x (angular acceleration),
but since you have this aversion to anything involving calculation, I won't bother!
You know you have a totally impractical view of the world. Your job might let you ignore equations and mathematics but many people cannot do that.
Can you imagine the designers of aircraft trying to use your ideas in calculating the lift and drag of an aircraft wing from all the variables involved?
No, in the real world, calculations and equations are quite necessary, and your
denspressure ideas just do not work!
Do you wonder that I can't see any logic in your ideas?