Find the Zeros

Problems

The four cases (LN04)

Click a member you think carries no force, then name the case that shows it. Loads are in kN. Every answer is checked against an exact method-of-joints solution of the whole truss, in fractions with no rounding, and each zero is explained by the four cases from LN04. Keys: 1 to 4 and 0 name a case, H hint, S show the rest, N next problem.

CE 329 Structural Analysis · Teaching demo. Built with AI assistance. Nothing you do here is graded or recorded; your progress stays in this browser.

CE 329 Structural Analysis · Teaching demo. Built with AI assistance. Every answer is checked against an exact method-of-joints solution, in fractions with no rounding.

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Open the feedback form

Press Copy report first, then open the form and paste it into the first question. The report includes the truss on your screen and what you clicked, so the problem can be reproduced.