Two forces of magnitude \( F \) are acting on a uniform disc kept on a horizontal rough surface ...

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Two forces of magnitude \( F \) are acting on a uniform disc kept on a horizontal rough surface as shown in the figure.
\( \mathrm{P} \) Friction force by the horizontal surface तााोोोगाााााता

W on the disc is \( n F \). Find the value of \( n \).
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