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  4. A weight w is suspended from the mid-point of a rope, whose ends are at the same level. In other to make the rope perfectly horizontal, the force applied to each of its ends must be

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Q. A weight $w$ is suspended from the mid-point of a rope, whose ends are at the same level. In other to make the rope perfectly horizontal, the force applied to each of its ends must be

NEETNEET 2022

Solution:

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For equilibrium of body
$ m g=2 T \cos \theta $
$ T=\frac{m g}{2 \cos \theta}$
For the string to be horizontal, $\theta=90^{\circ}$
$T =\frac{m g}{2 \cos 90^{\circ}}$
$\Rightarrow T =\infty$