Physics 113 –Morning 2006

Extra credits problems #3

Due June 22, 2006

Team #______________

Member 1__________________

Member 2__________________

Member 3__________________

Rules:

-Collaboration between team members is encouraged, however one or two authors will be responsible for one problem and may be asked to explain it.

-The authors should present the solution on a blank sheet with their names on it

-Solutions should include “self-explained” diagrams/sketches, with minimal wording. Neat presentation will count toward the problem grading.

1.- Discuss all possible causes that may make the method discussed in pp3 Q8.1, i.e. finding the right initial height of the weight through the formulas of conservation of energy described so that the ball will hit a specified target certain location, not working. Be specific.

2.- Show in your own words different shooting mechanisms based on conservation of energy (trebuchet, catapult, etc.) pointing out the relation mechanism-conservation of energy and other physics we have seen.

3.- Research and describe in your own words all physics involved in designing a rollercoaster.