A rod of length \( / \) whose lower end is fixed along the horizontal plane starts from the vert...
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0A rod of length \( / \) whose lower end is fixed along the horizontal plane starts from the vertical position. The velocity of the upper end of the rod when it hits the ground is
(A) \( \sqrt{3 g l} \)
(B) \( \sqrt{2 g l} \)
(C) \( 2 \sqrt{g l} \)
(D) \( \sqrt{g l} \)
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