3/3/09

Post date: Mar 03, 2009 12:35:9 AM

Bell Ringer: What is a machine?

• • Turn in 13.1 assignment (calculations with work and power)

  • Machine - any device that changes the size or direction of a force

• Pulley Lab

  • • Experiment with how different arrangements of pulleys change the amount of force required to lift a weight

    • Due Wednesday