- #1
ThomasMagnus
- 138
- 0
Hello,
I am currently studying circular motion. I came across something in my textbook that I would like some helP with.
It says:"if the wheels and tires of a car are rolling normally without slipping or sliding, the bottom of the tire is at rest against the road at each instant; so the frictional force the road exerts on the tires is static friction"
My question is: How could the tires be at rest if they are in constant motion? Wouldn't the frictional force be kinetic since the wheels are moving?
Thanks
I am currently studying circular motion. I came across something in my textbook that I would like some helP with.
It says:"if the wheels and tires of a car are rolling normally without slipping or sliding, the bottom of the tire is at rest against the road at each instant; so the frictional force the road exerts on the tires is static friction"
My question is: How could the tires be at rest if they are in constant motion? Wouldn't the frictional force be kinetic since the wheels are moving?
Thanks