1. Mobile Project Cherie Lehman WLHS

2. Mobile Project w Mobiles Inspired by Work of Alexander Caulder w Mobiles -- Blend of Physics and Art w Mobile Construction -- Torque Assessment

3. Alexander Calder w Received a degree in mechanical engineering but soon after decided to pursue a career as an artist.

4. Caulder Examples

5. 1957 NY Port Authority

6. Constellation & Tower

7. Mobile Supported by Stabile

8. Authentic Assessment w Students apply the concepts learned in the unit Torque Balance Center of Mass Pivot

9. Project Details w Project counts as an exam w Design plan must accompany mobile Diagram of mobile showing locations of weights for each tier Torque calculations for each tier Mobile itself

10. Mobile Requirements w Your mobile should have a theme For example, a mobile with an astronomical theme would contain stars, planets, comets, etc.  Each mobile must contain 5 tiers  At least 1 tier must contain 3 masses w At least 2 tiers must be pivoted from a point other than the cg of the support rod  You must include a layout of the mobile design

11. Design Layout for Each Tier  the mass of the support rod  the masses of the hanging ornaments  the lengths of the respective lever arms  the location of the pivot  Mathematical proof that the torques are balanced

12. Design Plan  If the mass of your support rod is significant compared to the masses of your hanging ornaments, be sure to include the torque exerted by the weight of the support rod in your calculations.

13. Mobile Grading Scheme  25 pts. for your design plan  25 pts. for the 5 tiers -- 5 pts. for each tier  5 pts. for one tier containing 3 masses w 10 pts. for two tiers pivoted at point other than cg of support rod  10 pts. for proper balance -- i.e. horizontal orientation of supports

14. Grading Scheme Continued w 10 pts. for theme w 15 pts. for artistic design and aesthetic value  BONUS: 5 pts. bonus for science theme  BONUS: 5 pts. bonus for extra tier w 100 pts. total

15. Toys in the Attic

17. Stars Mobile

18. Life Cycle of a Star

19. Molecules

20. Evolution of Music

21. Sports

22. Scientists

23. Toys

24. Calculating Torques

25. Final Adjustments

26. The Food Chain

27. Geology Mobile