Hey Mr Doner, it may just be because you drew it free hand but assuming that I’m right in saying that with the example of the racecar’s free body diagram, Fg is equal to or greater than N, wouldn’t the resultant force be sloping slightly downwards?
It is a little confusing because the drum is vertical in the first drawing, and the second drawing is meant to be a photo from the top. If we consider the case where the drum is horizontal, the resultant force must point towards the center of the circular motion since the objects move at constant speed, and we would need to imagine the combination of the weight of the clothes and the normal force, and some frictional forces with neighbouring clothes, such that we would get a constant net force towards the center of the circular motion.
Its weird how we are actually defining an accelerating and inertial frames because if say something is inertial , it has to be inertial from the perspective of an inertial frame and that inertial frame has to be inertial from the perspective of another inertial frame. This could go on forever and if there's a single inertial frame, there has to be infinite inertial frames. This makes it very hard to distinguish something from an accelerated frame because if you change the perspective, the accelerated frame could be inertial and we have to weigh one perspective over another. This doesn't feel completely right
All inertial frames, move at constant velocity (including 0) relative to one another. Any frame that accelerates relative to one of these frames, accelerates relative to all inertial frames.
