A sphere is suspended by a thread of length $\ell $. What minimum horizontal velocity has to be imparted to the sphere for it to reach the height of the suspension
A sphere is suspended by a thread of length $\ell $. What minimum horizontal velocity has to be imparted to the sphere for it to reach the height of the suspension
- A
$g\ell $
- B
$2g\ell $
- C
$\sqrt {g\ell } $
- D
$\sqrt {2g\ell } $
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