A thin annular metal disc of inner and outer radii a and b respectively , is freely suspended from a point on its outer circumference . The length of the corresponding equivalent simple pendulum is

A thin annular metal disc of inner and outer radii a and b respectivel

1.	A thin annular metal disc of inner and outer radii a and b respectively , is freely suspended from a point on its outer circumference . The length of the corresponding equivalent simple pendulum is
Answer» `(a^2+B^2)/(2B)` `(a^2+3b^2)/(2b)` `(3a^2+b^2)/b` `(a^2+2b^2)/b` ANSWER :B

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A thin annular metal disc of inner and outer radii a and b respectively , is freely suspended from a point on its outer circumference . The length of the corresponding equivalent simple pendulum is

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