Please check out an example video for finding torques, using torque = Frsin(B), where B is the angle between the force and the radius line coming from the axis of rotation. The example is for equilibrium situations.
Try practice problems Ch. 10 #1, 2, and 13, on page 7 of the rotations packet from yesterday. For constant angular acceleration and the new kinematics equations, try Ch 9 #9, 11 on page 5.
The axis of rotation will be THE reference point we use to figure out torques, angular momentum, and something called the moment of inertia, which we will worry about next time you're in.
Take advantage of the time today to try the practice rotation problems, and to help each other go over some of the gravity problems. We will have review and additional practice tomorrow, of course, to get set for Friday.
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