12/15/08

Get the Office Together

Let me inform you of something - putting together a tv stand, office chair and desk with the enthusiastic help of two dogs is somewhat of a trial. Fortunately, they chose not to assist with the unpacking and setting up of the flatscreen. Home office with HDTV and Xbox 360 - I'm not sure if productivity will he high, but at least work will be fun.

Physical Science - inclined planes are an example of a simple machine, something that makes work easier. Notice that the amount of force you used decreased, but work increased by using the inclined plane. Mechanical advantage varied with slope angle, but efficiency was pitiful each time. Exactly as I would expect. Tomorrow, we will go into depth about machines and their connection to work and will stay with this topic a few days, with an additional simple machine lab to reinforce the ideas.

Physics - gravity and its effects on motion was the topic of the day. Tomorrow, some math practice with gravity and centripetal force problems and then a centripetal force lab on Wednesday. Thursday, review - Friday, exam. Week over.

Honors Physics - tonight's reading on torque will give you some background for tomorrow's lab. The lab will center on torque, balance and the two conditions of equilibrium. Pay attention to the sign conventions for torque, as you did for rotation, when working torque problems and analyzing the data in lab.

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