12/17/08

Lots of Stuff Whirling

Centripetal force and torque were the two lab topics today. Physics - complete your centripetal force lab tonight - all graphs and calculations - so that we can discuss it tomorrow. Also, make sure that you have finished your review worksheet so that we can use that to prepare for Friday's exam. Honors Physics - make sure all calculations for the torque and equilibrium lab are completed. We will discuss torque in detail tomorrow and consider examples where applied force and the lever arm are not perpendicular. Then, we begin to examine the concept of rotational dynamics and evaluate, mathematically, the two conditions of equilibrium. Physical Science started their discussion of simple machines with the lever family and tomorrow's lab will center around levers. Our next long block, we will do a lab examining pulleys. This website has a nice flash lesson on simple machines and mechanical advantage.

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