ESG260 Chapter 6 wrap up

Cables can be in compression.

• True
• False

Forces common to any two contacting members act with ​ (a)   ​ magnitudes and ​ (b)   directions.

• equal
• opposite
• orthogonal
• enormous

Categorize trusses and frames.

Groups:

(a) Trusses

,

(b) Frames

• Have only two-force members

• Have at least one multi-force member

• Can be solved with method of sections

• Can be solved with method of joints

How many two-force members are present in this structure?

• 0

• 1

• 2

When determining reactions at joints A, B, and C, what is the minimum number of unknowns in solving this problem?

• 6

• 5

• 4

• 3

Imagine that you have drawn an F B D of member B C. What will be the easiest way to write an equation involving unknowns at B?