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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 beA. `20^(@)`B. zeroC. `30^(@)`D. `3^(@)` |
Answer» Correct Answer - D `F=mgsintheta` `a=gsintheta` `therefore (49)/(980)=sintheta` `therefore theta=3^(@)` |
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