![]() 01/11/2017 at 23:05 • Filed to: PHYSICS | ![]() | ![]() |
I apologize for how stupid big this picture is.
I was just thinking. When you run over a pebble the tire isn’t flexible enough (I think) to give in around the pebble (let’s say the size of a quarter.) However I’m guessing the rock doesn’t push the entire wheel up, since you don’t lose all traction at that corner. So what’s happening Oppos?
![]() 01/11/2017 at 23:07 |
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the tire gives. as it rolls over the pebble, the pressure increases until the pebble is ‘in’ the tire.
if its any bigger, then you might feel a slight bump
![]() 01/11/2017 at 23:09 |
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Ah, I didn’t think the tire would be that flexible.
![]() 01/11/2017 at 23:11 |
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Tire and spring act like 2 springs in series. tire gives some, spring gives some. How much is dependent on the spring constant of each.
![]() 01/11/2017 at 23:11 |
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its rubber. supported by air. why wouldnt it?
![]() 01/11/2017 at 23:13 |
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What Peter black said. Watch aired down off road videos for an exaggerated demo
![]() 01/11/2017 at 23:15 |
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I’m guessing I don’t want to know exactly how that works, but it sounds “legit.”
![]() 01/11/2017 at 23:16 |
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On top of what others have said about the tire giving, sometimes on certain types of roads under the right conditions, the pebble may be pressed slightly into the road. Think blacktop on a hot summer day.
![]() 01/11/2017 at 23:18 |
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System Dynamics!
![]() 01/11/2017 at 23:19 |
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Ah, brings me back to AP Physics 1 two years ago. Funny how it makes so much sense now but back then it didn’t at all.
![]() 01/11/2017 at 23:19 |
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Watch a slow motion video of a tennis ball being hit. Same concept, more or less.
![]() 01/11/2017 at 23:20 |
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The pebble launches into the air creating a slipspace rupture and allowing lizard people to come in and to rule the government.
/s
![]() 01/11/2017 at 23:23 |
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So speeding does kill by the CIA black ops they run against people who listen to info wars!
![]() 01/11/2017 at 23:27 |
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I think the arrive in black helicopters sent by the Russians.
![]() 01/11/2017 at 23:29 |
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The tire deforms. How is this not obvious?
![]() 01/11/2017 at 23:33 |
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Rock squishes, duh
![]() 01/11/2017 at 23:34 |
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I didn’t think they’d deform that much though.
![]() 01/11/2017 at 23:34 |
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So buy that endtimes bunker and food ration kit for only three payments of $39,999.99. Also I’ll throw in my anti gay frog chem trail water filter, a $300 value yours for free.
![]() 01/11/2017 at 23:43 |
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Tire deformation is remarkable.
![]() 01/11/2017 at 23:48 |
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They don’t necessarily follow the exact profile of the pebble, more an approximation of it, i.e. with minimum radiuses.
Alternatively, depending on the pebble and how you hit it, it gets wedged in between a couple tread blocks and eventually punctures the tire.
![]() 01/12/2017 at 00:24 |
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I knew the sidewalls did, but I though the surface, so to speak, was much more rigid.
![]() 01/12/2017 at 00:46 |
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The tire deforms. Rubber is soft. Or, it gets caught in the tread pattern.
![]() 01/12/2017 at 07:05 |
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Forces on the tread actually deform the sidewall.
And, that’s also what really makes low rolling resistance tires - it’s not so much hard compounds and stiff sidewalls, as it is sidewalls that don’t lose a lot of energy in flexing (and therefore are supple).
![]() 01/12/2017 at 08:29 |
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And they frequent our bars when off work.