Attached is picture of a car wheel in 3D. Assume it is suspended and rotating in the air. If I put a nut + proximity sensor right on top of the nut within the red line to measure RPM, will the nut placement in point B and C have same RPM reading? What if it is placed in point A?
Point C is the surface of the wheel and point B is the side of the wheel. Point A is wheel center point.