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A tube of length L is filled completely with an incompressible liquid of mass M and closed at both the ends. The tube is then rotated in a horizontal plane about one of its ends with a uniform angular velocity ω. The force exerted by the liquid at the outer end is

$\dfrac{ML\omega^2}{2}$
MLω2
$\dfrac{ML^2\omega^2}{2}$
$\dfrac{ML\omega^2}{4}$
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