Chapter 10 - Rotational Kinematics and Energy - Problems and Conceptual Exercises - Page 329: 100

$\omega=1.7\times 10^2\frac{rad}{s}$

We know that $U_i+K_i=U_f+K_f$ $\implies 0+\frac{1}{2}I\omega^2=mgh+0$ This simplifies to: $\omega=\sqrt{\frac{2mgh}{I}}$ We plug in the known values to obtain: $\omega=\sqrt{\frac{2(0.11)(9.81)(1.0)}{7.4\times 10^{-5}}}$ $\omega=1.7\times 10^2\frac{rad}{s}$