Two equal and opposite forces are applied tangentially to a uniform...

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Two equal and opposite forces are applied tangentially to a uniform disc of mass \( \mathrm{M} \) and radius \( \mathrm{R} \) as shown in the figure. If the disc is pivoted at its centre and free to rotate in its plane, the angular acceleration of the disc is
(1) \( \frac{F}{M R} \)
(2) \( \frac{2 F}{3 M R} \)
(3) \( \frac{4 F}{M R} \)
(4) Zero
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