Re: The Olympics

[Bob Sciamanda <trebor@VELOCITY.NET>]

If you change any component of a vector, you change the vector!

Bob

Bob Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net
http://www.velocity.net/~trebor


> Perhaps one of the confusions here (at least for me) is that looking at
> Bruce's link (below) it is now clear that the claim is NOT that the
> gymnast/diver imparts NO angular momentum on takeoff, only that they
often
> impart no angular momentum around the vertical axis--that is, they do
impart
> AM around a horizontal axis perpendicular to their direction of motion.
> That this can be converted to AM around other axes without changing the
> overall vector AM is what is apparently not well understood but seems to
> involve techniques like the 'tilt twist'