Whats the max MPH the RX-8 Can output
12-22-2005, 11:23 AM
#78
This is really hopeless. Newton figured this all out for you, why are we debating it.
Someone is postulating and everybody else is arguing but the laws of physics pre-exist our discussion.
The relationship of mass and force is absolute. The definition of work has been set. No matter how many finely-tuned "what if's?" you throw at it, it won't change.
A force acting on a mass over time will yield a velocity. If you want the same velocity after changing one of those variable (mass, force or time), you need only change one other.
If mass increases, either increase force OR increase time.
That is it. There is no other argument. You don't need examples or parables.
Someone is postulating and everybody else is arguing but the laws of physics pre-exist our discussion.
The relationship of mass and force is absolute. The definition of work has been set. No matter how many finely-tuned "what if's?" you throw at it, it won't change.
A force acting on a mass over time will yield a velocity. If you want the same velocity after changing one of those variable (mass, force or time), you need only change one other.
If mass increases, either increase force OR increase time.
That is it. There is no other argument. You don't need examples or parables.
12-22-2005, 11:46 AM
#80
Originally Posted by 4 years to Supercharge
BUT since we don't live in a vacuum environment, the car has to fight against the drag. With more horsepower the car should be able to overcome the resistance from drag.
Increased weight will not be a factor in tire drag either since 400 or 500 lbs is equivalent to about 2 PSI of additional pressure across all 4 tires. Just pump 'em up and go.
12-22-2005, 01:10 PM
#81
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Originally Posted by MazdaManiac
Increased weight will not be a factor in tire drag either since 400 or 500 lbs is equivalent to about 2 PSI of additional pressure across all 4 tires. Just pump 'em up and go.
It seems to me that you're implying that if you don't pump up the tires, the car's maximum velocity will be reduced.
Hmm.
12-22-2005, 02:04 PM
#82
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Sorry man, dmp is right on this one. dv/dt's example just proved that his past statements (which, to be fair, said had an "unappreciable impact" on top speed, NOT none) were accurate.
Relax, you're not stupid, nobody is saying you are, and the world still loves you. Move on.
Relax, you're not stupid, nobody is saying you are, and the world still loves you. Move on.
12-22-2005, 04:31 PM
#83
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well lets try a different analogy? what is harder to push a 500 lb weight or a 1000lb weight? the 1000lb why? because the weight increases friction remember weight is equal to newtons. regardless 1.3 is correct adding weight reduces top speed because more weight means theres more F(g) (gravitational force) pulling down. this in turn increases the F(f) (force of friction) as now there is more force to deal with (or weight) if i could draw it out it would be simple to understand, but the reason weight is not a huge factor on top speed even though it does affect it is because guess what we have tires! its not like a flat surface where weight affects friction immensely but rather a rolling rubber tire that is ment to reduce friction while keeping enough so that we dont slide off the road ;D. the problem with the increasing time or force concept is that that law in general does not take in friction it is based on frictionless surfaces or vacuums which or course does not exist in real world terms.
12-23-2005, 06:23 PM
#85
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Originally Posted by Rx8maniac
well lets try a different analogy? what is harder to push a 500 lb weight or a 1000lb weight? the 1000lb why? because the weight increases friction remember weight is equal to newtons. regardless 1.3 is correct adding weight reduces top speed because more weight means theres more F(g) (gravitational force) pulling down. this in turn increases the F(f) (force of friction) as now there is more force to deal with (or weight) if i could draw it out it would be simple to understand, but the reason weight is not a huge factor on top speed even though it does affect it is because guess what we have tires! its not like a flat surface where weight affects friction immensely but rather a rolling rubber tire that is ment to reduce friction while keeping enough so that we dont slide off the road ;D. the problem with the increasing time or force concept is that that law in general does not take in friction it is based on frictionless surfaces or vacuums which or course does not exist in real world terms.
:
12-23-2005, 06:34 PM
#86
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Originally Posted by dmp
12-23-2005, 10:34 PM
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which is exactly why i said it does not play a huge factor at all try reading ;D
but the reason weight is not a huge factor on top speed even though it does affect it is because guess what we have tires!
but the reason weight is not a huge factor on top speed even though it does affect it is because guess what we have tires!
12-24-2005, 10:46 AM
#91
RX8 and a Truk....
Originally Posted by Bart!
Thats a dyno my friend, that doesn't mean the car will go that fast on a road.
what's your point? Are you trying to tell me something you think I don't already know?
I know you don't know me, but rest-assured when I made that video it was NOT in an attempt to make ppl believe I could achieve that speed while actually driving.
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