A horizontal force \( F \) is applied at the top of an equilateral triangular block having mass ...

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A horizontal force \( F \) is applied at the top of an equilateral triangular block having mass \( m \). The minimum coefficient of friction required to topple the block before translation will be
(1) \( \frac{2}{\sqrt{3}} \)
(2) \( \frac{1}{3} \)
(3) \( \frac{1}{\sqrt{3}} \)
(4) \( \frac{1}{2} \)
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