Mix Terms Flashcards
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The state of balance of a body where the resultant of all forces and couples acting on it is zero.
EQUILIBRIUM
The combined effect of all forces acting on a body, which must equal zero for equilibrium.
RESULTANT
A sketch representing a body and all the forces acting on it, useful for analyzing rigid body dynamics.
FREE BODY DIAGRAM
The force exerted perpendicular to a surface by an object in contact with that surface.
NORMAL FORCE
The force exerted parallel to a surface in contact, opposing the motion of an object.
FRICTION FORCE
A type of support that allows rotation and can only exert a normal force, analogous to a frictionless surface.
ROLLER SUPPORT
A support that provides both horizontal and vertical reactions, allowing for rotation while resisting translation
PIN/HINGE SUPPORT
A support that can exert horizontal and vertical reactions as well as a moment, restricting both translation and rotation.
BUILT-IN SUPPORT / FIXED SUPPORT/ CANTILEVER SUPPORT
To compute the resultant of the general force system, use
PYTHAGOREAN THEOREM
If ΣF=0 and ΣM≠0, then the resultant is a
COUPLE
A type of beam in which the supports are fixed support and a roller or pin.
PROPPED CANTILEVER BEAM
Cantilever beam is a type of statically ___ beam.
DETERMINATE
It is composed of straight members connected by rigid or pin connections to form a stable configuration.
FRAME
Give 1 most common situation where the pin reactions of the frame are not equal and opposite.
EXTERNAL LOADS ARE APPLIED AT THE PIN / THREE MEMBERS ARE CONNECTED AT THE PIN
A structure that is made of straight, slender bars that are joined together to form a pattern of triangles.
TRUSS
give three assumptions that are the basis when analyzing trusses.
(6)_THE WEIGHTS OF THE MEMBERS ARE NEGLECTED/DISREGARDED.
(7) ALL JOINT CONNECTIONS ARE PINS.
(8THE CONCENTRATED LOADS ARE APPLIED AT THE JOINTS
What is the force system of the force members of the truss when using the method of joints?
CONCURRENT
How many unknown force members in the cutting section of the truss when using the method of sections?
3 / THREE