Conceptual Physics class project Spring 2011 Lab construction of bridges, showing vectors, tension and force applied to real structures.

1. BRIDGES ∑ F = 0Sum of Forces equal zeroConceptual Physics Lab acloutier 2011 copyright Suspension, beam, truss & arch

2. Suspension - bridge having roadways suspended from cables that are anchored at either end and usually supported at intervals by towers(Milau Viaduct tallest bridge in world built 2004)

3. Singapore unique double helix design completed in 2010

4. London Bridge is not falling down Over the River Thames ~ 1825

5. Sao Paulo “X” Bridge

6. Beam Bridges

7. Chesapeake Bay Beam span bridge

8. Truss uses triangles Forces = compression & tensionGolden Gate

9. Styles of bridges to consider

10. Arch Bridge thank the Roman’s for this intelligent design

12. Roman Arch Force Vectors

13. RUBRIC:1. Draw a design off the top of your head. Make a plan/ pick a partner or chose to work alone2. Materials are plastic straws, limited glue and paper clips3. Tools are scissors, a glue gun with only two glue sticks4. Illustrate the completed bridge showing force/ tension /vectors gravity, weight N (newtons), and where ∑F=0 is the sum5. Do the physics vector and include the magnitude and distance for one specific section of the bridge.(Use graph paper if you like)6. Include a top and side view of the bridge7. Three days 90 minute effort each, any additional materials you will need to supply*Document process at the end of each of the three days

14. The End Sandwich High School Conceptual Physics 2011 acloutier