Q.
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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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
answer is D.
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Detailed Solution
Tension at any point is dependent on square of angular velocity.
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