1. Simple Machines The mousetrap Game
Physics
Simple Machines
The mousetrap Game

2. Wednesday
Big ideas:
Determine how do simple machines give an advantage to their user
Identify the type, class, effort force and resistance force of a machine used

3. Types of advantage from a simple machine
Change in direction
More force out of machine than what is put in
More displacement related to force

4. Types of simple machines
Inclined plane family
Inclined planes
Wedges
Screw
Objects move along plane
Lever Family
Pulley
Wheel and axle
Levers
Rotation about a pivot

5. All machines are related to an effort and resistance force
Effort force =
Resistance force =

6. Where effort and resistance force are in each type of machine
Page from your book

7. Real life examples
Inclined plane
Wheel and axle
Screw
Wedge
Pulley

8. Levers All levers have a pivot point (fulcrum)
Are further divided up into classes
Classes are based on relative position of Effort force, Resistance force and the fulcrum

9. 1st class lever Fulcrum is located anywhere between the forces
Fulcrum does NOT have to be in the middle of board
Examples:

10. 2nd class lever
The resistance force is between fulcrum and effort force
Examples

11. 3rd class lever Effort force is between Resistance force and fulcrum
Examples

12. Game Challenge The Mousetrap Game
Composed of a large number of simple machines
Everyone will create a list of every simple machine used in the operation of a completed game Rube Goldberg Machine

13. Columns to be filled out
Step number (#)
Description of pieces used in step/action
Description of simple machine (if lever indicate class type)
Description of Effort force
Description of Resistance force
For levers describe fulcrum

14. Assignment details List will be due 2/11/08 (next Monday)
Be worth at least 25 points
Based on completion and accuracy
Typed/ organized in sequence