You are riding in a school bus. As the bus rounds a flat curve at constant speed, a lunch box with a mass of 0.550kg suspended from the ceiling of the bus by a string of length 1.71m is found to hang at rest relative to the bus when the string makes an angle of 32.0° with the vertical. In this position the lunch box is a distance 54.0m from the center of curvature of the curve.