Overall, I've done pretty well on this physics homework (which is due 10-13 @ 11PM Central), but these two questions are bugging the hell out of me. 1. An amusement park ride consists of a large vertical cylinder that spins about its axis fast enough that any person inside is held up against the wall when the floor drops away. The coeficient of static friction between the person and the wall is µ and the radius of the cylinder is R. Suppose a person whose mass is m is being held up against the wall with a constant tangential velocity v greater than the minimum necessary. Find the magnitude of the frictional force between the person and the wall. 2. A curve of radius r is banked at angle theta so that a car traveling with uniform speed v can round the curve without relying on friction to keep it from slipping to its left or right. Find the component of the net force parallel to the incline. As you can see, neither question provides any numbers, such that the answers are formulas. They are multiple choice, but there are 15 friggin' choices so they might as well not be. Any help is appreciated.