Practice Quiz

Civil Engineering PE

Category - Struct Analysis

Start a Study Session Sign up for Question of the Day
What are the three unknowns that must be determined when completely identifying a force?

1. Magnitude
2. Intent
3. Direction
4. Line of action
5. Rotation
  1. 1, 3, 4
  2. 1, 2, 3
  3. 2, 3, 5
  4. 3, 4, 5
Explanation
Answer: A - The three unknowns that must be determined when completely identifying a force are magnitude, direction, and line of action. While the magnitude, direction, and line of action are known for a given external load, the point of application is usually all that is known for a reaction. To figure out if a structure is statically determinate, the total number of unknowns (considering all forces) is compared to the three equations of statics. If there are more unknowns than the number of equations available, the structure is considered statically indeterminate.
Was this helpful? Upvote!
Login to contribute your own answer or details
Start a Study Session Sign up for Question of the Day

Top questions

Related questions

Most popular on PracticeQuiz