12/22/08

The End is in Sight

Vacation is almost at hand and we can at least count on the fact that there will be plenty of snow. Like everyone else, I would have liked a delayed start this morning, but we made do nicely. Physics - the exam is over and we will dip our toes into Chapter 8 tomorrow. Honors Physics - equilibrium problems can be a bear. Make sure to carefully write out the relationships for the 1st and 2nd conditions of equilibrium, take close note of the direction of each force and torque and choose an axis of rotation for the net torque evaluation that eliminates one of the unknown forces from the equation. We'll go over the problems in class tomorrow and pick up with more rotational dynamics when we return. Physical Science - tomorrow's lab will center around pulleys. This will give us one lab for the lever family and one lab for the inclined plane family for this unit. After vacation, we will add energy to our study of work, power and machines.

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