Subject is structural analysis Please show each steps to the question and make it easy for me to understand. Explain the diagram Problem-3Classify each of the structures as statically determinate, statically indeterminate or unstable. Ifindeterminate, specify the degree of indeterminacy.174...L(a)(b)O(d)

Determinacy of the Structure: The determinacy of the structure is determined by calculating if the structure is statically determinate, statically indeterminate, or unstable. The When the unknown reactions on the structure can be calculated only using equilibrium conditions then the structure is stable or determinate structure. When the structure contains more unknown reactions than the equilibrium conditions then the structure is indeterminate structure. When the structure has less number of reactions to resist the loads then the structure is called an unstable structure. Calculate the Determinacy of the Structure: m is the members, r is the reactions and j are the joints of the given structure. The determinacy of the structure is calculated using the given conditions: 3m+r > 3j When the structure satisfies a given condition then the structure is statically indeterminate. 3m+r < 3j When the structure satisfies a given condition then the structure is statically unstable. 3m+r =3j When the structure satisfies a given condition then the structure is statically determinate The determinacy of the given structure is calculated as given below: The free-body diagram of the given structure is: Hence the determinacy of the given structure is: 3m+r>3j3×2+4>3×310>9 Given structure is statically indeterminate. The degree of indeterminacy of the given structure is 1.Calculate the Determinacy of the Structure: The free-body diagram of a given structure is: The determinacy of the structure is calculated as: 3m+r<3j3×3+3<3×412=12 Given structure is unstable.Calculate the Determinacy of the Structure: The free-body diagram of a given structure is: The determinacy of the structure is calculated as: 3m+r>3j3×2+6>3×312>9 Given Structure is Statically Indeterminate. The degree indeterminacy of the given structure is 3.Calculate the Determinacy of the Structure: The free-body diagram of a given structure is: The determinacy of the structure is calculated as: 3m+r<3j3×3+3<3×412=12 Given structure is unstable.Final Answer: The determinacy of the given structures is calculated as above and obtained as: Structure (a) is statically indeterminate, and its degree of indeterminacy is 1. Structure (b) is unstable. Structure (c) is statically indeterminate, and its degree of indeterminacy is 3. Structure (d) is unstable.