1.

An annular disc has a mass m, inner radius R and outer radius 2R. The disc rolls on a flat surface without slipping. If the velocity of the centre of mass is v, the kinetic energy of the disc is

A. \(\frac{9}{{16}}m{v^2}\)
B. \(\frac{{11}}{{16}}m{v^2}\)
C. \(\frac{{13}}{{16}}m{v^2}\)
D. \(\frac{{15}}{{16}}m{v^2}\)
Answer» D. \(\frac{{15}}{{16}}m{v^2}\)


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