An object of mass m moves in a circle of radius r. It completes n revolutions every second.What is the kinetic energy of the object?* 4 m \pi^{2} n^{2} r^{2}

\frac{m n^{2} r^{2}}{4 \pi^{2}} 2 m \pi^{2} n^{2} r^{2} \frac{m n^{2} r^{2}}{8 \pi^{2}}