Physics talk

[Oakie]

And if you had a steel donut and heated it with a very hot thing, when the steel expanded would the hole in the middle of the donut get bigger or smaller?

(Sorry RC. Hope you don't dream of steel donuts now.)

[mossy1200]

If you have an object revolving through rotation (what? I know right?) and it's not changing speed, is it accelerating?

No but it still wants to leave its axis point hense tire expansion outwards. On a small scale than that of a drag car tire.
Ask a custom bike builder about the damage a tire with not enough guard clearance due to expansion during rotation.

[Ocean1]

And if you had a steel donut and heated it with a very hot thing, when the steel expanded would the hole in the middle of the donut get bigger or smaller?

(Sorry RC. Hope you don't dream of steel donuts now.)

Really?

Depends.

On the ratio of steel to hole.

[Dave-]

No but it still wants to leave its axis point hense tire expansion outwards. On a small scale than that of a drag car tire.
Ask a custom bike builder about the damage a tire with not enough guard clearance due to expansion during rotation.

No?!? it's not accelerating? haha gotcha

oh man....you honestly have no idea what you're talking about dude.

what else can you tell me about physics? if you hold up a rope with one hand, then pull your weight off the ground with the other, do you fly?

Really?

Depends.

On the ratio of steel to hole.

No the hole gets larger always.

It's to do with the atoms vibrating faster due to having higher energy and the electromagnetic force (cant remember if it's electromagnetic or vander vaals) binding the atoms stays the same.

Digging up exam questions from 2 years ago here guys.

Who knows which way electrons flow in a circuit? positive to negative? or negative to positive?

[Ocean1]

No the hole gets larger always.

So, a 10mm hole in a 1000mm steel sheet gets larger if you heat the steel?

[mossy1200]

No?!? it's not accelerating? haha gotcha

oh man....you honestly have no idea what you're talking about dude.

what else can you tell me about physics? if you hold up a rope with one hand, then pull your weight off the ground with the other, do you fly?

Im not sure what your trying to prove. You took the topic away from cetrifugal force and added revolving mass centripetal force.

Go take a weight on elastic out into your back yard and spin it in circles and come back in and tell me the elastic didnt stretch.


Or you could just watch it online

http://www.youtube.com/watch?v=PEcMgc2D3do

[Akzle]

So, a 10mm hole in a 1000mm steel sheet gets larger if you heat the steel?

yes.

Who knows which way electrons flow in a circuit? positive to negative? or negative to positive?

AC bitch.
(shit don't flow.)

[Dave-]

So, a 10mm hole in a 1000mm steel sheet gets larger if you heat the steel?

yup.

thermal expansion into wikipedia ought to answer most of what you're after.

Im not sure what your trying to prove. You took the topic away from cetrifugal force and added revolving mass centripetal force.

Go take a weight on elastic out into your back yard and spin it in circles and come back in and tell me the elastic didnt stretch.


Or you could just watch it online

http://www.youtube.com/watch?v=PEcMgc2D3do

so can you explain newtons 3rd law of motion to me?

AC bitch.
(shit don't flow.)

you're telling me alternating current doesn't flow?

[mossy1200]

yup.

thermal expansion into wikipedia ought to answer most of what you're after.



so can you explain newtons 3rd law of motion to me?

So you still think a tire doesnt expand and increase diameter as revolutions increase?

[Dave-]

So you still think a tire doesnt expand and increase diameter as revolutions increase?

no it does, but not for the reasons you've stipulated.

please, explain how newtons 3rd law of motion applies to your centrifugal force and the centripetal force you understand so little of.

and explain to me, if force is equal to mass times acceleration, that if a tyre is spinning but not changing speed is there a force pushing it outwards? if the acceleration is 0? how does that happen?

[Oakie]

Who knows which way electrons flow in a circuit? positive to negative? or negative to positive?

Left to right?

[mossy1200]

no it does, but not for the reasons you've stipulated.

please, explain how newtons 3rd law of motion applies to your centrifugal force and the centripetal force you understand so little of.

and explain to me, if force is equal to mass times acceleration, that if a tyre is spinning but not changing speed is there a force pushing it outwards? if the acceleration is 0? how does that happen?

Ok Dave your correct the tire expands but not because of cetrifugal force. But the tire does expand.

[Dave-]

Can you get a knee down on on a cop bike?

Left to right?

Actually it's negative to positive, Benjamin Franklin got them around the wrong way, but because it's such an integrated engineering standard now and it makes no real difference, no one has dared to change it.

true story.

[Dave-]

Ok Dave your correct the tire expands but not because of cetrifugal force. But the tire does expand.

Im thinking your need to be vocally perfect might cost you a few relationships. Im not sure Newton had a theory on that though.

oh no.

10char

[mossy1200]

Actually it's negative to positive, Benjamin Franklin got them around the wrong way, but because it's such an integrated engineering standard now and it makes no real difference, no one has dared to change it.

true story.

Ok if im incorrect Dave in the reason explain the expansion in a way that we all understand.

Yesterday you mentioned a decrease in diameter but now you state you accpet an increase and im not sure why you have changed your mind on that.


The low effect of down force on a high speed bikes front wheel(where most speedos connect ) or even the rear wheel taking into account bike dont have wings forcing them downwards .

there are so many things that effect the accuracy of a crude for of speedo. Traction against surface( the wheel the speedo will cause negative or positive changes depending on front or rear), expansion or disortion of tyre and theres most likely alot of others.