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Answer 1

Answer:

Explanation:

Compound pendulum

Any swinging rigid body free to rotate about a fixed horizontal axis is called a compound pendulum or physical pendulum. The appropriate equivalent length \displaystyle for calculating the period of any such pendulum is the distance from the pivot to the center of oscillation.] This point is located under the center of mass at a distance from the pivot traditionally called the radius of oscillation, which depends on the mass distribution of the pendulum. If most of the mass is concentrated in a relatively small bob compared to the pendulum length, the center of oscillation is close to the center of mass.