Now anyone can learn speed control

thank you for the link. i'm a nerd deep down and could listen to this for hours.
 
We've been showing students how to learn speed control in pool school for years. It's really much simpler than this link would suggest.

Steve
 
I watched the entirety of the 49 minute talk and am fully enlightened. Of course I was enlightened the first time this was presented in HS and again in College. And I remember the sliding chalk boards. The talker we had, derived all of the equations.

There were assumptions:
-The balls do not roll but slide. This is a biggie.
-The balls stick to each other after collision. Also a biggie.

Looks like everyone will have to tune in Wednesday to see how rolling balls react.

But the talk was good for what it was. And in your case, an example of humor.

For those preferring to read, might I suggest the 3 volume The Feynman Lectures on Physics that Richard Feynman put together. Commonly called the Red Book Series. He even derives logarithms in volume 1. You can use your local library World Catalog and request them.

This post would have been better placed and I am sure appreciated in the NPR section. And yes, I am a conservative.

Oh. Pool is much simpler and more complex that the talk.

 
Professor Lewin is certainly one of the better Physics lecturers in this world! This is so much better than the young guy I had when I was in college.
 
Speed

Great lecture, I enjoyed it. I have quized a lot of players with the following:

X (any number) balls frozen together (in a straight line - against the rail) - you roll 1 into the Row and it sticks while 1 rolls out the other side

X balls frozen together - you roll 2 (frozen) into the stack - 2 roll out

X balls frozen and you roll 3 balls into the stack - 3 roll out

I demondstrated the above 3 scenarios and asked the question: 3 balls frozen together and you roll 5 balls into the 3, what is the result?

I used a cue against the side of the balls to hold them against the rail (keep them in line). So far no one has correctly answered the question, but after I tell them and show them they realize why.
 
Energy in = energy out.

Several years ago every executive had a little thing on their desk with steel balls hanging from strings. You pull two back and let them go, two come out the other side. three back, three out. Same principle.

Steve
 
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