If the bob is just able to complete the circular motion, then tension at the lowest point just when the bob starts rising will be

6 M g

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5 M g

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3 M g

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M g

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Solution

The correct option is A $6 M g$
To complete circular motion in a vertical plane, minimum velocity required at the lowest point is $v = \sqrt{5 g r}$
now, $T = M g + M v^{2} / r$
$s o, T = M g + 5 M g r / r$
$T = 6 M g$

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If the bob is just able to complete the circular motion, then tension at the lowest point just when the bob starts rising will be

The correct option is A 6MgTo complete circular motion in a vertical plane, minimum velocity required at the lowest point is v=√5grnow, T=Mg+Mv2/rso,T=Mg+5Mgr/rT=6Mg

The correct option is A $6 M g$
To complete circular motion in a vertical plane, minimum velocity required at the lowest point is $v = \sqrt{5 g r}$
now, $T = M g + M v^{2} / r$
$s o, T = M g + 5 M g r / r$
$T = 6 M g$