1.

For point P under the support B, the vertical stress is given by __________

A. \(σ_z=\frac{q}{aπ} [xα(x-α)] \)
B. \(σ_z=\frac{q}{π}α_B \)
C. \(σ_z=\frac{q}{π} \left[\frac{az}{a^2+z^2}\right] \)
D. \(σ_z=\left[xα_B-\frac{az}{(x-α_B )^2+z^2}(x-α_B)\right] \)
Answer» C. \(σ_z=\frac{q}{π} \left[\frac{az}{a^2+z^2}\right] \)


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