Q. A small remote-control car with a mass of 1.7 moves at a constant speed of = 12.0 in a vertical circle inside a hollow metal cylinder that has a radius of 5.What is the magnitude of the normal force exerted on the car by the walls of cylinder at point A (at the bottom of the vertical circle)?
Q. A pendulum of length 9.00 m is held out to point A. At the vertical position, an overhang effectively cuts the length of the pendulum by an amount equal to 3m. (That is, 3.0 m is no longer free to swing.) How long does this pendulum take for one oscillation? Suppose that all displacement angles are small.