A uniform cube of side \( a \) and mass \( m \) rests on a rough ho...

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A uniform cube of side \( a \) and mass \( m \) rests on a rough horizontal table. A horizontal force \( F \) is
P applied normal to one of the faces at a point that is

W. directly above the centre of the face, at a height \( \frac{3 a}{4} \) above the base. Find the minimum value of \( F \) for which the cube begins to tip about the edge? (Assume that the cube does not slide).
(1) \( \frac{5 m g}{3} \)
(3) \( \frac{m g}{3} \)
(2) \( \frac{2 m g}{3} \)
(4) None of these
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