could relativity proof have been falsified?

[Outlaw]

Originally Posted by raaaid

oh come on then why racing cars use such a big tyres

even outlaw agrees friction is surface dependant contrary to what the science geniouses said

How is it you claim to be such a genius free thinker yet you can't understand what I have said.

The sliding friction equation you quote makes some assumptions. Within those assumptions the friction force is independent of surface area. In other words (which you are likely incapable of understanding), within the context of that definition of sliding friction, it is correct to make such a statement.

In real world application it is often the case that those assumptions are not met. In those cases a bit of care and judgement must be exercised before using the equation.

It can't be made any simpler than that.

As far as rolling resistance goes, the definition clearly makes the assumption that there is a single point of contact. Everyone knows (except, possibly, those people that believe Google ranks searches based on traffic) that it is impossible to have a single point of contact.

So, arguing that you are being lied to about rolling friction is as far from intelligent as you can get because even a lump of broken concrete can understand the above assumption.

That does not mean that the rolling friction concept is not useful (just as the sliding friction concept is useful). It simply means that it must be used within the assumptions that are part of its definition. Outside those assumptions the aforementioned care and judgement must, once again, be brought into play.

--Outlaw.