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Tension in a String

Find the mini...

Question

Find the minimum value of F for the block to topple about an edge.

\frac{2}{3}

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\frac{1}{3}

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\frac{2}{5}

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\frac{2}{9}

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Solution

The correct option is A $\frac{2}{3}$ mg
Minimum value of F for the block to topple about an edge
$F \times \frac{3 a}{4} = m g \frac{a}{2} F = \frac{2}{3} m g$

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