Mechanical systems and control: pg. 124 - 127 Flashcards
1
Q
What is a crank?
A
Crank = part of an axle or shaft bent out at right angles.
2
Q
What is a pulley?
A
Pulley = wheel with a grooved rim around which a cord passes
3
Q
A crank is a: A. First-class lever B. Second-class lever C. Third-class lever D. None of the above
A
B. Second-class lever
4
Q
What is a shaft?
A
A rod.
5
Q
What five forces can act on a structure?
A
- Torsion
- Tension
- Bending
- Shearing
- Compression
6
Q
What is torsion?
A
Torsion = a twisting force.
7
Q
What is tension?
A
Tension = a stretching force.
8
Q
What is bending?
A
Bending = a bending force.
9
Q
What is shearing?
A
Shearing = a tearing force.
10
Q
What is compression?
A
Compression = a squashing force.
11
Q
What is triangulation?
A
Triangulation = a specific arrangement (triangles) of the components of the structure, used to stiffen the structure.
