Recent content by UNForces_885

Without applying any force on the book the force of static friction is zero N Assuming that you apply some force on the book, the static friction increases with increasing the applied force until the maximum static friction is reached, beyond which the book will start moving. Fsmax=µsN In this...

My whole point was to address the confusion related to static and kinetic friction while a wheel is rolling or sliding thus my question; Does a rolling car wheel on its own experience more friction than the same wheel sliding? If yes, why is it easier to roll the wheel than to slide it?

Most probably, neither of you is wrong and I only misunderstand the whole concept that's why I asked for elaboration.

Actually, rolling involves static friction. That's why I am confused. Giancoli-Physics-Principles-with-Applications-7th (2014) Page 204

Could you please answer the question? Does a rolling car wheel on its own experience more friction than the same wheel sliding? If yes, why is it easier to roll the wheel than to slide it? [Please keep the answer as simple as possible]

The more details you introduce the more I get confused. :( Does a rolling car wheel on its own experience more friction than the same wheel sliding? If yes, why is it easier to roll the wheel than to slide it? [Please keep the answer as simple as possible]

If the explanation is correct, it's a fact that the static friction of rolling wheels is higher than the kinetic friction of sliding wheels, which is not experienced when I roll or slide a wheel on its own as it's much easier to roll the wheel probably because less friction is involved.

How then can you explain the following quote?

Thanks for your answers. But I am lost indeed in those details you mentioned. Let me rephrase the question. Assume a single car tire on a horizontal surface in two situations not attached to anything: 1- It's rolling (µs is involved) 2- It's sliding (µk is involved) since Fsmax=µsN (where Fsmax...

I learned that rolling involves the coefficient of static friction unlike sliding that involves the coefficient of kinetic friction. It's known that the coefficient of static friction is always higher than the coefficient of kinetic friction. This should result in rolling to be more difficult...

I know that normal force is not a reaction force to the gravitational force; - First, because the gravitational force is from Earth on the object (action force) thus the reaction of force is simply form the object on Earth according to Newton's third law. - Also because in certain situations...