Question

For any position of point P subtending angle α with AB, the vertical stress is given by___________

a.

\(σ_z=\frac{q}{aπ} [xα(x-α)] \)

b.

\(σ_z=\frac{q}{aπ} \)

c.

\(σ_z=\frac{q}{aπ}\left[xα-\frac{az}{(x-α)^2+z^2}(x-α)\right] \)

d.

\(σ_z= \left[xα-\frac{az}{(x-α)^2+z^2}(x-α)\right] \)

Answer: (c).\(σ_z=\frac{q}{aπ}\left[xα-\frac{az}{(x-α)^2+z^2}(x-α)\right] \)

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Q. For any position of point P subtending angle α with AB, the vertical stress is given by___________

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