Physics · 2022
JEE Main · 27 June 2022, Shift 2 · Q34
One end of a massless spring of spring constant k and natural length l_0 is fixed while the other end is connected to a small object of mass m lying…
One end of a massless spring of spring constant $\displaystyle k$ and natural length $\displaystyle l_0$ is fixed while the other end is connected to a small object of mass $\displaystyle m$ lying on a frictionless table. The spring remains horizontal on the table. If the object is made to rotate at an angular velocity $\displaystyle \omega$ about an axis passing trough fixed end, then the elongation of the spring will be :
Official answer
(3)
$\displaystyle \frac{m \omega^2 l_0}{k-m \omega^2}$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.