A ball is hung by a string from the ceiling of a car moving on a straight and smooth road. If the string is inclined towards the front side of the car making a small constant angle with the vertical, then the car is moving with

Constant velocity

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Constant acceleration

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Constant retardation

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Increasing acceleration

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Decreasing retardation

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Solution

The correct option is C Constant retardation
We have, $tan θ = \frac{a}{g}$
$θ$ is negative, i.e., $a$ is retardation.

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A ball is hung by a string from the ceiling of a car moving on a straight and smooth road. If the string is inclined towards the front side of the car making a small constant angle with the vertical, then the car is moving with

The correct option is C Constant retardationWe have, tanθ=agθ is negative, i.e., a is retardation.

The correct option is C Constant retardation
We have, $tan θ = \frac{a}{g}$
$θ$ is negative, i.e., $a$ is retardation.