angular speed question!! please help right away! a pencil, 15.7 cm long, is released from a vertical position with the eraser end resting on a table. The eraser does not slip. Treat the pencil like a uniform rod. what is the angular speed of the pencil just before it hits the table? i know i have to use conservation of energy, but im not sure where center of mass fits in.. please help the answer choices are: a. 11.2 rad/s b. 7.23 rad/s c. 24.5 rad/s d. 16.8 rad/s any help or guidance would be much appreciated..thank u!