A uniform solid sphere rolls down on a vertical rigid surface without slipping. The vertical surface moves with an acceleration a = g / 2 in horizontal direction as shown. The minimum coefficient of friction between the sphere and vertical

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A uniform solid sphere rolls down on a vertical rigid surface without slipping. The vertical surface moves with an acceleration a = g / 2 in horizontal direction as shown. The minimum coefficient of friction between the sphere and vertical surface so as to prevent slipping is . Write 14 as answer.

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Correct answer: 8

aligned & mg - f _ s = m ( a _ cm )_ rel (1) & N - m g 2 = m (0) ; N = m g 2 ; f _ s R = 2 5 mR ^2 aligned

A uniform solid sphere rolls down on a vertical rigid surface without slipping. The vertical surface moves with an acceleration a = g / 2 in horizontal direction as shown. The minimum coefficient of friction between the sphere and vertical surface so as to prevent slipping is . Write 14 as answer.

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