MECH325 - Homework Hints, Answers, and Extra Requirements

Homework 5 (Chapter 6)

TO ENHANCE YOUR LEARNING, PLEASE TRY TO WORK THE PROBLEMS FIRST WITHOUT LOOKING AT THE HINTS AND ANSWERS BELOW.

MAKE SURE YOU SATISFY ALL REQUIREMENTS LISTED BELOW AND IN THE ORIGINAL PROBLEM STATEMENTS (UNLESS INDICATED OTHERWISE BELOW).

NOTE - BECAUSE MOST ANSWERS ARE PROVIDED, IT IS VERY IMPORTANT THAT YOU SHOW ALL STEPS IN YOUR WORK.  THE GRADING WILL BE BASED ON THE COMPLETENESS, CLARITY, AND CORRECTNESS OF YOUR WORK, NOT JUST THE ANSWERS YOU PROVIDE.

6.4
[20 pts]
  • P = 9900 lb
6.19
[40 pts]
  • Plot points a and b on a Σ1-Σ2 plot.
  • Draw load lines for points a and b.
  • The load varies linearly along the load line.
  • Ignore the Ssy provided. The maximum shear theory defines its own shear yield strength (Sy/2).
  • (a) 8.0 kN
  • (b) 6.4 kN
  • (c) 7.3 kN
6.21
[20 pts]
  • (a) 2.4
  • (b) 1.5
  • (c) 1.7
6.37
[20 pts]
  • 8%