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प्रश्न
A person sitting on a swing stands up. The time period of swing:
विकल्प
Increases
decreases
Does not change
become zero
उत्तर
The time period of swing decreases because, in the standing position, the center of the mass of the person shifts upwards. Due to which the effective length of the pendulum, `I` decreases. As T ∝ `sqrtl`, therefore time decreases.
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