The period of a simple pendulum suspended from the ceiling of a car is T, when the car is at rest, if the car move with a constant acceleration the period of the pendulum is
A
Unaltered
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B
Decreases
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C
Increases
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D
Noneofthese
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Solution
The correct option is BDecreases when car moves with an acceleration aeff=√a2+g2 ∴T∝1√aeff ∴ T decreases