Is maximum topspin overspin?

A test to determine whether I can achieve overspin--more than natural role topspin

Category:

Sports

Tags:

• billiards
• instruction
• topspin
• english
• pool

[Stiletos]

Very clever if you were not stroking the 9-ball so close to the rail that every single shot had a slight elevation to the cue and caused the 9-ball to leave the table in a small jump shot, as can be evidenced from the poor man's slow motion camera of double clicking the pause/play button and catching the critical moment.

You DID prove that the cueball flying above the sandpaper without any contact will not make the sandpaper move, thus speaking volumes about the aerodynamics of spheres.

[FargoBilliards]

If it was a "scoop" type jump, then I think your objection would be valid, But a normal jump requires interaction between the potentially overspinning ball and the sandpaper/table bed to happen.

[WarnerKrause]

This experiment assumes the friction between the bottom of the sand paper and the wax paper is equal to the friction between the ball and the felt, which is not the case. If you assume the friction between the sand paper and wax paper is less than the friction between the ball and felt, then I suppose you could at least disprove the possibility of overspin on felt. The problem is that even if you can make overspin work using your experiment, it proves nothing and still may not work on the felt.

[FargoBilliards]

Only assumption is friction between ball and grit side of sandpaper exceeds that between bottom of sandpaper and waxed paper--and that's actually proved to be true at the end of the video.

Also, the friction has no bearing on whether overspin happens, only on how fast it rubs off when it does happen.

[FargoBilliards]

I revised this video, and unfortunately I lost the ratings and comments from the first version. Sorry.

-mp

[DanSandwich]

ray romano?

[darksinthe]

i actually agree with stiletos even after reading your argument to his comment. there is force on the top part of the ball, which can lead to a jump if the cue stick gets out of the way in time, even with a non elevated cue stick. basically you're hitting the ball so high, that there is force pushing the cue ball into the sandpaper, and it pops up just slightly. of course the sandpaper and wax paper make the jump lower than it would be on normal cloth though. I think newton said it best.

[TheEnseo]

What dose Esoteric mean?

[sabriath]

I like that you took a hypothesis and created a way to test it without using expensive equipment...however, it was a flawed hypothesis from the beginning. Even if the stick hits the ball at exact tangent line, the force given to the ball is 100% radial on the top....but 0% on the bottom, that alone tells you that you cannot achieve overspin on a shot. When you hit 2 balls together, there is radial force while forward force is stalled, that's why you get overspin on collisions.

[unchartify]

just skip to 6 18

[MrTyronePimp]

someone just kill this guy and put him out of his misery already

[tomsanzf]

the fact that the ball keeps on spining after hitting the other ball has nothing to do with the way the ball was hit. once the ball enters pure rolling which will happen after a while if you hit it dead center, its angular momentum is conserved in the colision with the other ball but its lineal momentum is transfered to the other ball leaving it spinning on the cloth. wen friction catches on this spin accelerates the ball foreward

[jgonz185]

kermit the frog?

[EJConrad]

5:14, was that a push/ double hit (cue contact ball after contact)?

compare sound to 4:24

[jayhalford110]

And the point is?????????????

[JeeRaph]

Which drawers in my kitchen? Are they in the same drawer? Is the scotch tape in the kitchen? I'm so confused.

[robsterhughes]

My best bit was 6:43 Thumbs up if you agree.