If the temperature of the 75 -mm-diameter post (C D) is increased by (60^{circ} mathrm{C}), determine the

Question:

If the temperature of the 75 -mm-diameter post $C D$ is increased by $60^{\circ} \mathrm{C}$, determine the force developed in the post. The post and the beam are made of A-36 steel, and the moment of inertia of the beam is $I=255\left(10^{6}\right) \mathrm{mm}^{4}$.

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