Physics · Engineering Mechanics
If you have sectioned a planar truss and have three unknown member forces, which of the following sets of equations would you most likely NOT use to find all of them?
- 1∑F x = 0, ∑F y = 0, and ∑M B = 0
- 2∑F x = 0, ∑F y = 0, and ∑M A = 0
- 3∑F x = 0, ∑F y = 0, and ∑M C = 0
- 4∑F x = 0, ∑F y = 0, and ∑F z = 0✓
Correct answer
∑F x = 0, ∑F y = 0, and ∑F z = 0
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