A plumb line is suspended from a ceiling of a car moving with horizontal acceleration of a. What will be the angle of inclination with vertical.
A
tan−1(a/g)
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B
tan−1(g/a)
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C
cos−1(a/g)
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D
cos−1(g/a)
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Solution
The correct option is Atan−1(a/g) When car moves towards right with acceleration a than due to pseudo force the plumb line will tilt in backward direction making an angle θ with vertical