Handed back RA 7.2. Brandon worked out the final problem on the board.
Handed out worksheet on static equilibrium including problem solving strategy. Gave students time in class to work on the problems.
Finished class with short demos on center of mass:
balancing ruler, balancing bird, rolling on ramp, belt, finding center of mass of an object using a pin and string, unable to touch toes when standing against wall.
Mentioned how center of mass can be used with "wobble" of stars to find planets in other solar systems.
Students have circular motion lab due next Tuesday as well as try to finish torque problems.
Friday, May 23, 2008
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