Re: Swing and momentum


"BernardZ" <bernardZ@xxxxxxxxxx> wrote in message news:MPG.1eed2e0942dec8e09899e2@xxxxxxx
While going on a child swing, I was trying to explain the mechanics.

What I found myself stuck on was the momentum. As the swinger goes
higher and higher, the swing velocity on the bottom gets faster and
faster so there does his angular momentum.

Since momentum is conserved where is the other side of the angular
momentum, the only think I can think is the air must be pushed away and
so preserving the angular momentum. Okay if so then a swing should not
work in a vacuum. Which does not sound right!

Angular momentum is not conserved for a swing.

Martin Hogbin



.

Relevant Pages

  • Re: Axe attack
    ... > apparently in an racist attack. ... For any "swung" weapon that has fair mass and carry through such as an axe ... swing starts or just after swing but before momentum builds. ...
    (rec.martial-arts)
  • Re: Swing and momentum
    ... What I found myself stuck on was the momentum. ... Angular momentum is not necessarily constant. ... but that it cycles between kinetic energy (at the bottom ... Pushing air out of the way will only drain kinetic energy from the ...
    (sci.physics)
  • Re: Byron Nelson and 11 victories in a row
    ... Momentum counts for something, I would think. ... the off-season while every other pro is retooling his swing and gearing up ... retooling their swings during our summer. ... I'm not arguing that one kind of streak is necessarily more impressive than ...
    (rec.sport.golf)
  • Re: Swing and momentum
    ... What I found myself stuck on was the momentum. ... faster so there does his angular momentum. ... Okay if so then a swing should not ... equation for conserving angular momentum, ...
    (sci.physics)
  • Re: Swing and momentum
    ... faster so there does his angular momentum. ... and therefore you should not expect angular momentum of the swing ... linear momentum is exchanged with the surroundings not only through ...
    (sci.physics)