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A disc of mass M and radius R is placed ...

A disc of mass M and radius R is placed on a rough horizontald surface. A light rod of length 2R is fixed to the disc at pointt A as shown in figure and force `(3)/(2)` Mg is applied at the other end of the rod. Find the minimum value of coefficient of friction (upto on decimal place ) between disc and horizontal surface, so that disc starts to roll without slipping .

A

0.2

B

0.4

C

0.6

D

0.8

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The correct Answer is:
D
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