4 ms·
Except inverted. Left spin on a ball makes it go right by Magnus. Left curl makes a stone curl left. I curl and play pool, so I've come up with reasons for the
by elif 9y ago
Except inverted. Left spin on a ball makes it go right by Magnus. Left curl makes a stone curl left.
I curl and play pool, so I've come up with reasons for the difference in my head.
The slower turning side creates more friction because it grabs the ice, the faster side glides over rather than grabbing. This is obvious when you intently watch as the curl picks up at the end of the shot.
QED, dunno why a bunch of non-curlers wrote these articles they should just curl.
- claar 9y ago>The slower turning side creates more friction because it grabs the ice, the faster side glides over rather than grabbing. Don't both sides turn at the same speed?
- BenjiWiebe 9y agoNot relative to the direction of travel over the ice.
- kazinator 9y ago> The slower turning side creates more friction because it grabs the ice, the faster side glides over rather than grabbing. For surfaces that do not melt to create a liquid film, this intuition is wrong. If any sliding is taking place, then static friction has been overcome, and kinetic friction is at play. Dry surface kinetic friction doesn't increase with speed: well, the coefficient doesn't but the actual force does! https://physics.stackexchange.com/questions/48534/does-kinetic-friction-increase-as-speed-increases https://physics.stackexchange.com/questions/48534/does-kinet...
- snowwrestler 9y agoSoccer balls also curl toward the spin. Kicking a ball to impart left spin will make the ball curl to the left in midair.
- xorxarle 9y agoAn example of this could be walking on a slippery surface, your shoes grip until a threshhold is reached where you slip and increased speed seems to reduce the friction. I imagine it like tiny bumps that repel the surface of the shoe so that there is less net contact. Or is that the second hypothesis in the article? The relationship between speed and friction is discussed here, also: https://physics.stackexchange.com/questions/29561/does-friction-decrease-as-objects-move-faster-against-each-other https://physics.stackexchange.com/questions/29561/does-frict...