Honors On Rotational Motion

Here are up to date notes on torque and angular momentum.

http://h1.ripway.com/DrCherdack/NotesonTorquerev12-5-10.doc

They cover some of what the Rotational Motion Group will present tomorrow in period 2 and I will present in period 7. Read them so you will be able to follow it.

For tomorrow answer the following questions based on all you have ( or should have) learned about rotational motion so far.

A solid disk of radius R =50 cm and mass 10 kg is at rest. A tangential force of 10 N is applied at 25 cm from the center of this disk. Note that for a solid disk I = MR^2/2. Also note that 50 cm does not equal 50 m. Find the following:

aplha ( rotational acceleration)

atangential of a point at the edge of the disk i.e. r =50 cm.

After 20 seconds what is:

omega

vtan at the edge

the KE of the disk

the L of the disk

the work done by the torque

the distance traveled by a point on the edge.

the acentripetal of a point on the edge.