i need it for my science!!!
2007-01-02 23:54:58 · 3 answers · asked by chenmey 1 in Science & Mathematics ➔ Other - Science
Check this out
http://en.wikipedia.org/wiki/Levers
No diagrams, but east to picture in ur mind :)
2007-01-03 00:00:29 · answer #1 · answered by maltease14 2 · 0⤊ 0⤋
The lever is a straight bar. Now, you draw three horizontal lines. For the first one put a fulcrum (pivot) in the middle, a downward force (the Effort) on the left end, and a downward force (the Resistance) on the right end. It should remind you of a see-saw... and it's a 1st Class lever.
Now (next line): Fulcrum at right end, Resistance downward in middle, and Effort upward at left end. 2nd (I believe) Class lever.
Finally(last line): Draw the fulcrum at the left end, the Effort upward in the middle, and the Resistance downward at the right end. 3rd Class lever....and you have your diagrams!
2007-01-03 10:47:06 · answer #2 · answered by Richard S 6 · 0⤊ 0⤋
All three classes are diagrammed here.
http://en.wikipedia.org/wiki/Levers#Second-class_levers
2007-01-03 11:51:31 · answer #3 · answered by Anonymous · 0⤊ 0⤋