We don’t have a specified axis and we don’t know where the pivot is. The rest of the transcript is about a collision between a ball and the bar. If we have a collision there’s angular momentum, no collision, no angular momentum. Back to penny and bun physics, is there a collision between the fly le...

I've been trying to catch up on this (lengthy!) thread before attempting to contribute, in the hope that I don't just rehash old discussions. The question of the effect of damping on oscillation frequency has received a lot of discussion. It is of at least academic interest, even if it's a bit hard ...

"I have a hard time imagining mechanisms for things other than the sequence of tip positions affecting the cast." To avoid confusion: When saying this, I'm still assuming no hauling, and the initial state of the line prior to the cast is the same in all cases (for example straightened back...

Thanks Lasse, I've written and deleted several responses because I don't want to come across as defensive or argumentative. You've captured the spirit of my intent well. Having pondered the various helpful responses, I have a hard time imagining mechanisms for things other than the sequence of tip p...

"Fews observation that motion can be both rectilinear and curvilinear caused several leading commentators on the board at the time to shit ferrets." Yikes! I had no idea I had unintentionally caused such a combination of gastrointestinal distress and animal abuse. As a newbie I should have...

Sorry...after the "the stop," tip motions cause line disturbances that counterpropagate back toward the fly, correct? Also, I saw the thread you started regarding the role of line tension in determining the rate of wave propagation. I have to admit that issue had completely escaped me. Few

Thanks for the response.

Few

Trigger warning : This may be the most basic question possible about casting physics, so I'm relying on the reader's forebearance. Does the trajectory of the rod's tip during the cast (meaning rod tip position in three dimensions vs. time) completely determine the resulting cast? To avoid distracti...

"I'm not sure what adjustments you are referring to." Sorry John, I wasn't clear--too concerned about not being verbose! First, my mention of the motion of the center of mass was only to clarify that in simpler (non-casting) contexts, the degrees of freedom of a body can be separated into ...

Well John, you've chosen a hell of a field to earn a Ph.D. in! I studied isolated molecules and am now feeling like I took the easy route. You've got a metric ton of interconnected degrees of freedom to juggle. Since most joints are built for rotation, it's quite amazing that we manage to generate a...