The target audience for "Mechanics of Materials" by Hibbeler includes:
Hibbeler is known for cutting through the fluff. He presents the mathematical proofs and physical principles clearly, followed immediately by step-by-step procedures for analysis. 11 r c hibbeler mechanics of materials the 7th editionpdf
If your professor assigns specific problems from the 7th edition, you need the 7th edition. If they assign from the 11th, buying the 7th is risky because the problem numbers are different, even if the diagram looks the same. The target audience for "Mechanics of Materials" by