Department of Civil Engineering
CIV206 Mechanics of Materials
Spring 2024
Homework Assignment #2
Torsion
Homework submission requirements
The following guidelines must be adhered to in all homework submissions.
1. The first page of your homework submission must include only your name, class code &
name, homework number, list of problems completed, and due date. Write the instructor
name at the bottom of the first page.
2. Begin solving each problem by writing the problem number, followed by problem
statement and figure (if applicable).
3. Draw clear free body diagram(s), stress diagram, and strain diagrams for each problem as
needed in the solution. Show all appropriate dimensions and forces.
4. If problem solution takes more than half page, then start the problem solution on a new
page. Write the problem number before you begin solving.
5. Submit only your final clean solution without any cross-outs or scratching.
Problem 3.1: Use a radius of 22 mm (instead of 18).
Problem 3.2. Use a torque T = 100 N.m.
Problem 3.4 Use torque of 60 kip.in (instead of 40 kip-in.).
Problem 3.11. Assume the torque in pulley C is 70 N.m (instead of 60 N.m).
Problem 3.16: Use allowable shearing stress of 20 ksi in the steel rod AB and 10 ksi in the brass
rod BC.
Problem 3.32. Assume that the depth of the ocean floor is 6000 ft (instead of 5000 ft).
Problem 3.38: Assume the torque at point B is 1800 N.m, but opposite to the direction shown in
the figure.