Not all professors share their solution sets. Students in large lecture courses may have no access to worked examples beyond the textbook.
“I’ll just copy the manual and learn later before the exam.”
Sometimes the textbook’s examples don’t cover every nuance. The solutions manual can unstick a student who has tried everything.
: If you're a student studying mechanics of materials, I highly recommend using this solutions manual to supplement your textbook. Make sure to review the textbook material and use the solutions manual to reinforce your understanding of the concepts.
This approach preserves the learning process while using the manual as a diagnostic tool.