4/14/09

Post date: Apr 14, 2009 4:24:14 PM

Bell Ringer: Which is more important in a machine, a high mechanical advantage or a high efficiency? Why?

  • MA and Efficiency Practice - due Wednesday

    • Notes on potential and kinetic energy

      • Kinetic energy

        • Energy of motion

        • Depends on mass and velocity of object

        • KE = 1/2*m*v^2

      • Potential energy

        • Energy of position, energy of height

        • Depends on mass, gravity, and height

        • PE = m*g*h

  • Pages 221-224: 2, 3, 5, 7 Due Thursday