- The time period of a pendulum-like system is approximately proportional to the square root of its effective length (distance from the pivot to the center of mass). - When a person stands up on a swing, their center of mass is raised, which effectively reduces the distance from the pivot point (where the swing ropes attach) to the center of mass of the system (swing + person).
A person on a swing stands up. The time period of the swing
Asked in WBPSC CS Prelims 2021 · Topic: Mechanics (Simple Harmonic Motion and Damped/Forced Oscillations)
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