rudransh verma
Gold Member
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I may have missed something before but I am again asking if it’s static friction between the road and tyre how is the tyre/car accelerating?bob012345 said:Ignore the green friction. That is something called rolling friction which is a different kind of resistance to rolling motion and is not considered in your problem. The only friction you need for this problem is static friction, what they gave you, because the wheel is not slipping with respect to the ground. The wheel applies a force to the ground and the ground applies a force to the wheel. The wheel accelerates forward and the ground (road) accelerates backward (again Newton's Third Law) but at such an imperceptibly small rate as to be considered zero.