Practice Fundamental Equations Of Statics (7.5) - Theory of Structures

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6 sample questions

Question 1.
Define equilibrium in your own words.
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Think about balance.
Question 2.
What is meant by the sum of forces being zero?
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Consider pushing and pulling in opposite directions.
3Question 3.
What is the first condition for static equilibrium?
- \\(\\Sigma F_x \\neq 0\\)
- \\(\\Sigma F_y = 0\\)
- \\(\\Sigma F_x = 0\\) and \\(\\Sigma F_y = 0\\)
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Think balance in both directions.
4Question 4.
True or False: Moments do not affect the stability of a structure.
- True
- False
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Consider a seesaw with unequal weights.
Question 5.
A beam is propped up at both ends with an 800 N weight placed 2 meters from the left support. Calculate the reactions at both supports.
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Use the equilibrium of moments about one of the supports.
Question 6.
A triangular truss has forces acting on two joints. If one joint has a downward force of 300 N, what must the other joint's upward force be for equilibrium?
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Balance forces vertically.

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