Final answer:
To determine the force in member hc, we can use the equation F = (AL/Lo)(Y/A). If the force is positive, then member hc is in tension. If the force is negative, then member hc is in compression.
Step-by-step explanation:
To determine the force in member hc, we need to use the equation F = (AL/Lo)(Y/A). From the given information, we know that the force F is 3.0 x 10^6 N, the cross-sectional area A is 2.46 x 10^-3 m², and the modulus of elasticity Y is a constant value. We also need to know the change in length AL and the original length Lo. Once we have these values, we can calculate the force in member hc.
Regarding the state of member hc, tension or compression depends on the sign of the force in member hc. If the force is positive, then member hc is in tension. If the force is negative, then member hc is in compression.