- A Rigid Uniform Annular Disc Is Pivoted On A Knife Edge A In A Uniform Gravitational Field As Shown Such That It Can Ex 1 (71.47 KiB) Viewed 100 times
A rigid uniform annular disc is pivoted on a knife edge A in a uniform gravitational field as shown, such that it can execute small amplitude simple harmonic motion in the plane of the figure without slip at the pivot point. The inner radius r and outer radius R are such that r2 = R2/2, and the acceleration due to gravity is g. If the time period of small amplitude simple harmonic motion is given by T = BT/R/g, where n is the ratio of circumference to diameter of a circle, then ß (round off to 2 decimal places). a A g r R