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Ch. 4 and 6 Pre Test with solutions PDF
- print all 5 pages and bring it to class tomorrow!
Centroid
- construct the centroid aka center of mass on cardboard paper. use the bottom of a tissue box, the front side of a cereal box, etc. draw a scalene triangle on it. construct the centroid. poke a tiny hole through the centroid. thread a piece of string or thread or a thin shoelace through the centroid. tie a tiny knot on the bottom end of the string. see if your triangle is parallel to the ground. if it is, good. if not, back to the drawing board (no pun intended)
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