A plump bob is hanging from the ceiling of a car :

A plump bob is hanging from the ceiling of a car. If the car moves with an acceleration a, the angle made by the string with the vertical is
(a) sin-1(a/g)
(b) sin -1(g/a)
(c) tan-1(a/g)
(d) tan-1(g/a)

Anurag Mishra Professor Asked on 1st February 2016 in Maths.
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    Answer: (c) tan-1(a/g)

    Anurag Mishra Professor Answered on 21st May 2016.
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