Physics · 2018
JEE Main · 15 April 2018, Shift 2 · Q7
A thin rod MN, free to rotate in the vertical plane about the fixed end N, is held horizontal. When the end M is released the speed of this end, when…
A thin rod MN, free to rotate in the vertical plane about the fixed end N, is held horizontal. When the end M is released the speed of this end, when the rod makes an angle $\displaystyle \alpha$ with the horizontal, will be proportional to : (see figure)
Official answer
(1)
$\displaystyle \sqrt{\sin \alpha}$
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JEE Main 2018 Physics question, with the answer from NTA’s final answer key. Where our answers come from.