Assignment:
The students, working in groups
of 3, will build a type of catapult known as a trebuchet, powered by a
2 kg falling mass. The device must fit within an imaginary 75 cm cube.
You must use only 1x2" wood (except for the base where the sling will slide.
You must use a sling. The projectile to be launched will be a 4 oz
beanbag.
Grading Criteria:
Completion Grade
The completion grade
will be based on the group finishing the project according to the given
criteria on time, proper construction techniques, and safety.
1 pt - working on
the project when instructed to do so
1 pt - practicing
safety rules (i.e. using goggles)
2 pt - research
paper: history of catapults, types, your design details (how and why you
built it as you did); 3 pages double-spaced, font: 10pt Arial or 12 pt
Times New Roman
Competition Grade
Scoring will
be based on how far the projectile travels. You will attempt 2 launches.
A's - Top 3 distances (2nd period); Top distance (3rd period)
B's - Next 3 distances (2nd); 2nd furthest distance (3rd)
C's - Shortest 5 distances (2nd); Shortest 2 distances (3rd)
A zero or
negative distance will be a D; if it cannot launch, it is an F
Previous Competitions:
• Fall
2002
• Spring
2002
• Fall
2001
• Fall
2003 |
