Question
Members $A B$ and $B C$ can each support a maximum compressive force of $800 \mathrm{lb}$, and members $A D, D C,$ and $B D$ can support a maximum tensile force of 2000 lb. If $a=6 \mathrm{ft}$ determine the greatest load $P$ the truss can support.
Step 1
Taking a moment about point A, we have $\sum M_A = 0$. This gives us $C_y \cdot 2a - P \cdot a = 0$, which simplifies to $C_y = \frac{P}{2}$. Show more…
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