The discussion revolves around the differences in friction experienced by the rear and front wheels of a car, particularly in the context of acceleration and weight distribution. Participants explore the underlying physics principles related to friction, motion, and forces acting on the vehicle.
The discussion is active, with various interpretations being explored regarding the role of friction in different scenarios. Participants have provided insights into how acceleration affects frictional forces, and there is an ongoing examination of the conditions under which friction may be zero.
Some participants reference hypothetical scenarios, such as pure rolling motion and the absence of friction, to illustrate their points. There is also mention of external factors like air resistance that complicate real-world applications of the discussed concepts.
It is not (see motorbikes for extreme examples), but that is not the point: the car is accelerating, so the forces are not balanced.lavankohsa said:
mfb said:
Even if the weight were equally distributed, that only says the maximum frictional force is the same on each. In rolling motion, the actual frictional force is anything from 0 to maximum (static) frictional force (in any direction).lavankohsa post: 5007298 said:
Only if the car is coasting. If it is accelerating on the flat or maintaining a constant speed on a hill (or moving in any way that an engineless cart would not) then there must be some friction.lavankohsa said: