Monday, March 28, 2011
The Screw and the Wheel & Axle
Wow can you believe March is almost over!!! Any way, today (or maybe last Thursday) we finished up the online activities. The last activity was about the wheel and axle and the screw. So what did you learn? What two things affected the MA of the wheel and axle? Which situation allowed the wheel and axle to have to highest MA? What makes the screw have a high MA? Just as a side note, if a machine is very efficient, with the MA be high or low? Tomorrow we talk about energy!!
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I learned how wedges and levers work.The size of the wheel and the distance of the threads will figure out the MA. The best combination is a big wheel and threads that are far apart. The further the threads are apart the more it can lift. The MA would be high.
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