The center rod CD of the assembly is heated from T = 30 °C to T = 210 °C using electrical resistance heating. At the lower temperature T the gap between C and the rigid bar is 0.7 mm. Rods AB and EF are made of steel, and each has a cross-sectional area of 125 mm2. CD is made of aluminum and has a cross-sectional area of 375 mm2. Est = 200 GPa, Ea = 70 GPa, and Cal = 23 (10-0) /°C. (Figure 1) Submit Previous Answers Correct Part B Determine the force in the rod EF caused by the increase in temperature. Figure 1 of 1> Express your answer to three significant figures and include the appropriate units.

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Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.