# Angular velocity of a rod released under gravity.

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 when it makes a 30.0 degree angle with the vertical?

3.56 rad/s

7.23 rad/s

1.83 rad/s

6.32 rad/s

https://brainmass.com/physics/energy/angular-velocity-of-a-rod-released-under-gravity-116776

#### Solution Summary

Finding angular velocity of the rod using energy conservation.

$2.19