11/3/09

Post date: Nov 04, 2009 2:38:36 PM

No bell ringer

    • Read pages 205-210

    • Discuss key terms, answer questions in small groups

      1. Define wi = wo

      2. What does MA measure?

      3. Explain the equation MA = Fr / Fe

      4. How are IMA and MA different?

      5. Explain efficiency = wo / wi

      6. What are the 6 simple machines?

      7. In efficient machines, how do the MA and IMA compare?

      8. Define compound machines.

      9. Explain how the MA of a bicycle is calculated.

      10. Further define the bicycle in regards to pedal, gear, and wheel radius.

      11. How does a multi-gear bike make the work easier?

    • Rube Goldberg Machine video

  • Do page 210: 13-15 for tomorrow