The \frac{3}{4} -in . -diameter shaft is subjected to the loading shown. Determine the stress components at point A. Sketch the results on a volume element located at this point. The journal bearing at C can exert only force components C_{y} \text{and} C_{z} on the shaft, and the thrust bearing at D can exert force components D_{x}, D_{y}, \text{and} D_{z} on the shaft.
Question 8.70: The 3/4 -in. -diameter shaft is subjected to the loading sho...
A=\frac{\pi}{4}\left(0.75^{2}\right)=0.44179 \mathrm{in}^{2}
I=\frac{\pi}{4}\left(0.375^{4}\right)=0.015531 \mathrm{in}^{4}
Q_{A}=0
\tau_{A}=0
\sigma_{A}=\frac{M_{y} c}{I}=\frac{-1250(0.375)}{0.015531}=-30.2 \mathrm{ksi}=30.2 \mathrm{ksi}(C)
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