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A metallic rod is rotating on a frictionless horizontal plane about an axis passing through one of its end, If the angular velocity is doubled 

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By Expert Faculty of Sri Chaitanya
a
there will be no elongation in any case
b
elongation in rod will remain same
c
elongation in rod becomes two times of initial value
d
elongation in rod becomes four times of initial value
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detailed solution

Correct option is D

Tension at any point is dependent on square of angular velocity.


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