Rotational Motion- Parallel Axis Theorem?

[elianaphys]

Homework Statement

A meter stick is held to a wall by a nail passing through the 60-cm mark. The meter stick is free to swing about this nail, without friction. If the meter stick is released from an initial horizontal position, what angular velocity will it attain when it swings through the vertical position?

Homework Equations

Parallel Axis theorem Iz=Icm+mr^2
Conservation of Mechanical Energy E=1/2Iω^2+U=[constant]

The Attempt at a Solution

By using the parallel axis theorem, I have found the moment of Inertia, which is 0.09. Now, I am a bit stuck as to how to apply this toward finding the angular velocity. I believe rotational kinetic energy is a necessary intermediary step, but I am unsure about how to get there.

FYI, I am doing this through an online course and so have myself and a textbook--no teacher. I sincerely appreciate any and all help!

 

[SammyS]

Homework Statement

A meter stick is held to a wall by a nail passing through the 60-cm mark. The meter stick is free to swing about this nail, without friction. If the meter stick is released from an initial horizontal position, what angular velocity will it attain when it swings through the vertical position?

Homework Equations

Parallel Axis theorem Iz=Icm+mr^2
Conservation of Mechanical Energy E=1/2Iω^2+U=[constant]

The Attempt at a Solution

By using the parallel axis theorem, I have found the moment of Inertia, which is 0.09. Now, I am a bit stuck as to how to apply this toward finding the angular velocity. I believe rotational kinetic energy is a necessary intermediary step, but I am unsure about how to get there.

FYI, I am doing this through an online course and so have myself and a textbook--no teacher. I sincerely appreciate any and all help!

How is potential energy determined for the meter stick ?