Necessary terms

[Stoatstail50]

Which common terms and concepts from physics or classical mechanics are most useful when discussing how we cast and what we cast with ?

[Stoatstail50]

I'll start then...

The "Mass" "or weight" Personally, for casting purposes I wouldn't be picky.

"Inertia" the resistance of an object to a change in its motion.

"Density", the relationship between Mass and Volume.

"Force". In the case of a fly rod and/or line something that causes it to move, accelerate and/or cause a deflection.

"Velocity". Speed with Direction

"Momentum". Mass times Velocity

"Rotation" the angular change in position of an object.

"Translation" the linear change in position of an object.

Someone must have some more....

[Marc LaMouche]

Acceleration/Deceleration
Linear/ Non Linear
Mass Distribution

and Bendyness

[White Hunter]

Tension

[James9118]

"Inertia" the resistance of an object to a change in its motion.

This is the one I see abused the most, it gets right on my tits.

Uncertainty principle - not knowing whether you're creeping or drifting .

[Stoatstail50]

Is that it....??

Blimey...... :oh:

[Marc LaMouche]

Is that it....??

what level of instruction are you aiming for, Mark ?

[flybye]

I would think Newtons second law of motion but I probably misunderstood the question. No wiki today ( which is probably much more important check it out )
TK

[Stoatstail50]

Yep definitely, all three would probably be handy in fact.

what level of instruction are you aiming for, Mark ?

It has come up three times in as many weeks with potential instructors. "What terms and concepts should I have under my belt in order to understand casting mechanics"...not to teach it but to engage in meaningful discussion with other people who are interested in it.

I'm not a trained physicist or a qualified engineer, I learned what little I know on the hoof like almost everybody else and I still can't always differentiate between hypothesis and fact because the concepts are arriving piecemeal and I don't understand them properly....so I thought I'd ask the experts...

...where the fk are they ?...

[Marc LaMouche]

ok, thanks.
tell ya what. once you and the f'n experts agree it would be nice to put together a list of these terms and add them as a byline to the SL Definitions

[flybye]

As I see it there are no facts, (Higgs/Bolsom Cerne stuff is fascinating but what does it mean to us. We will still only be able to go back in time ) as for hypothesis its just a proposition assumed as a premise in an argument. A theory however is more than just a guess.
I too read and think I understand but not enough to explain
TK

[Stoatstail50]

I too read and think I understand but not enough to explain
TK

Doesn't this make you irritated ? I want to understand enough to be able to explain it...

...the experts, meanwhile, are off on the Hunting of the Quark or summat...

[flybye]

Stoat,
I can manage E(F)=E©+E(b)- E(v)
F is energy supplied to the flyline
c is energy supplied by the casting motion.
e is energy supplied by the unbending of the rod
v is energy lost due to vibration ( counter flex)
So if you maxmise c and b and minimise v its got to be good?
TK

[Stoatstail50]

Hi Tony

All the energy is supplied by the caster, bar system losses, energy wise, input equals output, there is no energy supplied by the unbending of the rod, it is stored at the beginning as the rod begins to bend and delivered back as the rod unbends.

If you can minimse the system losses then yes, from an energy perspective, it should be be more efficient.

[flybye]

So if the, albeit small amount of, energy (supplied by the casting motion) stored in the bent rod be lost if the rod did not bend.
Tk