Welcome, Guest. Please Login
SLINGING.ORG
 
Home Help Search Login


Page Index Toggle Pages: 1
Send Topic Print
Curving rocks (Read 198 times)
Finn Cohen
Novicius
*
Offline


Slinging Rocks!

Posts: 2
Curving rocks
Jun 10th, 2022 at 4:33am
 
i'm wondering if anyones noticed the tendency for rocks to curve when you throw them. particularly Flat rocks when you throw a balearic type throw. i Kind of want to learn how to do this bu Questioningt i'm not having much luck.
Back to top
 
 
IP Logged
 
TOMBELAINE
Senior Member
****
Offline


Slinging Rocks!

Posts: 489
france
Gender: male
Re: Curving rocks
Reply #1 - Jun 10th, 2022 at 7:24am
 
I could be wrong. But I think :

1) All peebles revolve around their center of gravity.
2) For all peebles, the path of the center of gravity is right.

And more,

3) A flat peeble behaves like a fin in the air.
4) Aerodynamic peeble behaves like a football (non-amecican) ball with a drived path (Magnus effect).

just my idea.


Back to top
 
 
IP Logged
 
Rat Man
Slinging.org Moderator
*****
Offline


Slinging Rocks!

Posts: 13134
New Jersey, USA
Gender: male
Re: Curving rocks
Reply #2 - Jun 10th, 2022 at 8:26am
 
   Yes, as long as the rocks are spinning they will always curve.  Backspin makes them curve up; frontspin that you get from an underarm throw makes them curve down.  Anything other than a perfect front or backspin and they'll curve to the left or right.
Back to top
 
 
IP Logged
 
joe_meadmaker
Interfector Viris Spurii
*****
Offline


Slinging Ice is Cool!

Posts: 2037
PA, USA
Re: Curving rocks
Reply #3 - Jun 10th, 2022 at 1:22pm
 
This video from IronGoober is definitely worth checking out: https://youtu.be/ESrvvBFcrWM.

I don't know if it's entirely applicable because he's slinging a ball, not a flat stone.  But it might introduce some ideas to you.
Back to top
 
 
IP Logged
 
MMF
Tiro
**
Offline


Slinging Rocks

Posts: 47
The United States of America
Gender: male
Re: Curving rocks
Reply #4 - Jun 10th, 2022 at 8:11pm
 
Any spinning object in flight can experience the Magnus effect. For a flat rock, this effect may be very small. Instead, the curving you are seeing is a result of drag. The stone is taking the path of least resistance. While it is tumbling in flight, that direction changes.
Back to top
 
 
IP Logged
 
Archaic Arms
Funditor
****
Offline


Testing and inventing
"Archaic" weapons.

Posts: 612
Re: Curving rocks
Reply #5 - Jun 11th, 2022 at 3:53am
 
The rounder, the heavier your projectile is, the less the magnus effect will pull it off target. Most important thing is putting rifle-spin onto the projectile if you want to hit things past 30m.
Flat stones curve a lot to the right when you throw them at medium range, but they also release a bit later than rounded ones, so to hit the target, you have to be aware they can cancel each other out to some extent.
Back to top
 

Regards,
Lewis.
WWW  
IP Logged
 
TOMBELAINE
Senior Member
****
Offline


Slinging Rocks!

Posts: 489
france
Gender: male
Re: Curving rocks
Reply #6 - Jun 13th, 2022 at 4:43am
 
joe_meadmaker wrote on Jun 10th, 2022 at 1:22pm:
This video from IronGoober is definitely worth checking out: https://youtu.be/ESrvvBFcrWM.


Very good video, Irongoober. Clear and educational.  Smiley
Thanks
Back to top
 
 
IP Logged
 
Mersa
Interfector Viris Spurii
*****
Offline


Druid

Posts: 2334
Australia
Gender: male
Re: Curving rocks
Reply #7 - Jun 14th, 2022 at 6:02pm
 
If you want to curve rocks choose a less dense rock. Limestone with lots of internal cavities will curve heavily
Back to top
 

Razor glandes, Aim for the eyes!!!
 
IP Logged
 
IronGoober
Interfector Viris Spurii
*****
Offline


...and now, No. 1, the
larch...

Posts: 1146
California
Gender: male
Re: Curving rocks
Reply #8 - Jun 20th, 2022 at 1:33pm
 
TOMBELAINE wrote on Jun 13th, 2022 at 4:43am:
joe_meadmaker wrote on Jun 10th, 2022 at 1:22pm:
This video from IronGoober is definitely worth checking out: https://youtu.be/ESrvvBFcrWM.


Very good video, Irongoober. Clear and educational.  Smiley
Thanks

Thanks!
Back to top
 

John R.
 
IP Logged
 
Page Index Toggle Pages: 1
Send Topic Print
(Moderators: vetryan15, Chris, Curious Aardvark, Rat Man, Kick, Morphy)