A simple pendulum is suspended from the roof of a train. If the train is moving with an acceleration `49 cm//s^(2)`. Then the angle of inclination of
A simple pendulum is suspended from the roof of a train. If the train is moving with an acceleration `49 cm//s^(2)`. Then the angle of inclination of the string about the vertical will be
A. `20^(@)`
B. zero
C. `30^(@)`
D. `3^(@)`
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Correct Answer - D
`F=mgsintheta`
`a=gsintheta`
`therefore (49)/(980)=sintheta`
`therefore theta=3^(@)`
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