¶ Hammerthrow
RBF Definitions
one up to here. It can’t help it and the same tension will
pull all of them upwardly.
"Now I am going to do something else. Instead of using the
cellophane tape, I am going to have the series of the balls
tangent to one another going around here. We are going to give
this hammer thrower a whole lot more balls and there will
be one lodge here and another lodge there. They keep
building up and I give him some more. They will be on
the top and on the bottom. The wheel gets to be very thick,
but this set are horizontal and due to the acceleration the
ones on the top and bottom both try to get horizontal so
they press very hard on the horizontal layer. They build up
so much friction due to the rotation that they are much
better than the cellophane tape. You know that when I touch
the wheel with this ball going by here the tension goes
back along this way and acts as a fulcrum and the whole wheel
will bend downwardly so that the wheel that was going by me
horizontally like this goes in this position. Let’s get this
patterned again-- the ball is going by me here and they are
all thick now and when I touch the wheel that is going around
me like this it is deflected so it has to go in to a pattern
like that. As it went by me it went down into that pattern.
¶ Citations
- Oregon Lecture #4, pp. 147-149. 6 Jul’62
