This preview shows pages 1–2. Sign up to view the full content.
BE 110
An Introduction to Biomechanics
Fall 2005
Homework Assignment #5
Due Tuesday 11/1/05, 8AM before class
1. Reading assignment
:
There is an effective way to represent the normal stresses and shear
stresses on a geometric construct.
It is called a Mohr’s circle.
Study its construction (Section
4.3).
Can you think of a practical application of Mohr’s circle.
2. Practice Problems
(a) One of the most famous formulas in science is the drag of a viscous fluid on a sphere (see
problem 4.3 for full details).
The expression for the resultant force is useful in a variety of
problems.
One of them is to determine the molecular dimension (an order of magnitude
estimate) of a macromolecule (protein, etc.).
Describe how you would use this formula to
estimate the “Stokes radius” of a molecule.
(b) Show that the maximum shear stress is equal to
(1/2) (τ
ΜΑΧ
− τ
ΜΙΝ
),
where
τ
ΜΑΧ
is the
maximum principal stress and
τ
ΜΙΝ
the minimum principal stress.
Show that the maximum shear
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview. Sign up
to
access the rest of the document.
This note was uploaded on 03/26/2010 for the course BENG 110 taught by Professor Schmidschoenbein during the Spring '08 term at UCSD.
 Spring '08
 SCHMIDSCHOENBEIN

Click to edit the document details