# Engineering- 2.1

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1. cable
strong rope made of metal used in structures
2. centriod
geometrical center of an area
3. compression force
body subjected to a push
4. concurrent force systems
all forces applied at the same point/ action lines having the same intersection
5. cross-sectional area
exposing a surface or shape by cutting through a 90 degree angle from the axis
6. direction
direction of a vector is defined by the angle between a reference point and the arrow's line of direction
7. fixed support
prevents translation or rotation in a beam
8. flange
broad ridge, connected at a right angle, that's used to strengthen a structure
9. free body diagram
shows all external forces acting on a body
10. guesset
plate or bracket used to strengthen an angle
11. joint
connection of points of members of a truss
12. magnitude
absolute value of a number
13. member
straight pieces of a truss
14. method of joints
analysis of trusses that contructs free body diagrams of each joint & determins forces acting on that joint by considering the equilibrium of the joint pin
15. moment
turning effect of a force
16. moment of inertia
mathmatical property of a cross-section that is concerned with surface area & how that area is distributed about a centroidial axis
17. Newton's 1st law
things at rest stay at rest, things in motion stay in motion- unless acted upon by another force
18. Newton's 2nd law
change of motion of a body is proportional to the net force applied
19. Newton's 3rd law
for every action there is an equal and opposite reaction
20. pinned support
prevents translation in any direction
21. planar truss
lies on a single plane. often used to support roofs & bridges
22. resultant force
result of a system of force is the vector sum of all forces
23. roller support
only prevents a beam from translating in 1 direction
24. scalar
physical quiantity that has magnitude only
25. sense
direction of the vector realtive to its path & indicated by the location of the arrow
26. simple truss
composed of triangles
27. static quilibrium
no motion or continuous motion
28. statically inderminate
a body that is over-constrained such that there are no more unkown supports than there are equations of static equilibrium
29. structure
make up of interdependant parts in a definite pattern & organization
30. tension force
body subjected to a pull
31. vector quality
quantity with both magnitude & direction

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 Author: gurkem1 ID: 112488 Filename: Engineering- 2.1 Updated: 2011-10-27 03:23:24 Tags: POE vocab Folders: Description: chapter 2 section 1 vocab words- POE Show Answers:

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