D 40 cm A thin annular metal disc of inner and outer radii a

Last updated: 6/7/2023

D 40 cm A thin annular metal disc of inner and outer radii a and b respectively is freely suspended from point on its outer circumference The length of the corresponding equivalent simple pendulum a b a 3b A B 2b a 2b 2 b C 2b 3a b b D