GVPT 100 Lecture Notes - Lecture 2: Hyperbolic Geometry, Stress (Mechanics), CollagenExam
SchoolUniversity of Maryland
DepartmentGovernment and Politics
Course CodeGVPT 100
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BSCI 207 Spring 2019
Homework #5: Materials & structures
Please type your answers into this document and upload to ELMS by
11:59 P.M., Monday, 6 May 2019
You may work on this homework on your own or discuss it with others. If you work through
questions with others, be sure to turn in your own work, at the level at which you understand it.
Do not simply copy answers from or for someone else. Questions such as these will show up
on exams, so be sure to work to understand how to arrive at the answers.
(1) (3 pts) Figure 1 depicts samples from four cylindrical tendons and all are composed primarily of
collagen. Each has been clamped at both ends and a machine is used to gradually pull the ends in
opposite directions (arrows) until the material yields (i.e., experiences internal damage).
a. Which tendon sample(s) will probably require the most tensile force to cause internal damage?
b. Which tendon sample(s) will probably require the highest stress to cause internal damage?
c. Which tendon sample(s) will probably experience the greatest change in absolute length before
experiencing internal damage? Explain.
d. Which tendon sample(s) will probably have the highest elastic extensibility? Explain.
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