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A heavy ball is suspended from the ceili...

A heavy ball is suspended from the ceiling of a motor car through a light string. A transverse pulse travels at a speed of `60 cm s^-1` on the string when the car is at rest and `62 cm s^-1` when the car accelerates on a horizontal road. Find the acceleration of the car. Take `g = 10 ms^-2`

A

`2.7 m//s^(2)`

B

`3.7 m//s^(2)`

C

`2.4 m//s^(2)`

D

`4.1 m//s^(2)`

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The correct Answer is:
D
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