Question: A 4.53-kg mass attached to the lower end of a spring whose upper end is fixed vibrates with a natural period of 0.45 s. Determine the natural period when a 2.26-kg mass is attached to the midpoint of the same spring with the upper and lower ends fixed. The response must be typed, single spaced, must be in times new roman font (size 12) and must follow the APA format.