- A 2-force member is a part of a larger structure and is
is attached to other members at just a single point

is attached to other members at only two points

has only 2 forces acting on it

- A 2-force member is always
under tension

under compression

a zero-force member

one of the above

- The resultant of all forces acting on one endpoint and the
resultant of all forces acting on the other endpoint of a 2-force
member are :
equal in magnitude and point in the same direction

equal in magnitude and point in arbitrary direction

are not related to each other at all

their lines of action coincide with the line
connecting the two end-points

- In the analysis of trusses the weight of its members :
cannot be taken into consideration

is to be represented by a single force at their
center of gravity

is to be represented by two forces, one at either end-point,
each equals half the weight.

- In order to determine the internal and support forces on a
2-dimensional truss by the
**Method of Joints**, which of the
following conditions has to be satisfied :
the number of joints equals the number of members

2 times the number of joints equals the number of members

2 times the number of joints equals the number of members
plus the number of components of the support forces

2 times the number of joints equals the number of members

plus the number of external forces

- In order to determine the internal and support forces on a
2-dimensional truss by the
**Method of Section**, which of the
following conditions has to be satisfied :
the number of joints equals the number of members

2 times the number of joints equals the number of members

2 times the number of joints equals the number of members
plus the number of components of the support forces

2 times the number of joints equals the number of members

plus the number of external forces

- For 2-dimensional trusses the Method of Section when applied once
yields the force of how many internal members ?
Never more than 3

always exactly 1

always exactly 2

always exactly 3

as many as you like

- The equilibrium on a joint in 2-dimensional trusses give you how
many independent algebraic equations ?
you never know

1

2

up to three

- The equilibrium equations on a 2-dimensional truss as a whole
yield how many independent algebraic equations ?
you never know

1

2

3

- When applying the Method of Section to 2-dimensional trusses you have
to remove how many members ?
at most 3

always exactly 3

never more than 2