A sphere is suspended by a thread of length \( l \). \( \mathrm{P} ...

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A sphere is suspended by a thread of length \( l \).
\( \mathrm{P} \) What minimum horizontal velocity has to be

W imparted the ball for it to reach the height of the suspension
(1) \( g l \)
(2) \( 2 g l \)
(3) \( \sqrt{g l} \)
(4) \( \sqrt{2 g l} \)
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