PY 211 Mid Term Exam I
February 13, 2007
The Formulae Sheet
Three forces are applied to a circular ring in such a way
that the ring remains in equilibrium. If the forces, in
Newtons, are applied to the ring as shown below, find
the magnitude and
Theory of Elasticity
Based Upon Principles of Continuum Mechanics, Elasticity Theory Formulates
Stress Analysis Problem As Mathematical Boundary-Value Problem for
Solution of Stress, Strain and Displacement Distribution in an Elastic Body.
The stresses that cause deformation
Understand "stress calculations
Spend some time with these calculations to convince yourself
that stress on a given plane resolves itself into a single s
Boston University Physics Department PY 251 Worksheet 1
(1) The plot shows position as a function of time for two bugs moving along a
straight string: red-bug moves in a straight line and blue-bug moves in a pa
Assignment 21: LR, LC, LRC circuits
The R-L Circuit: Responding to Changes
Learning Goal: To understand the behavior of an inductor in a series R-L circuit.
In a circuit containing only resistors, the basic (though not necessarily explicit) assumption is
Hints for Homework X
A small solid conductor of radius a is
supported by insulating non magnetic disks
on the axis of a thin walled tube of radius b.
The inner and outer conductors carry equal
currents in opposite directions.
Find the self inductanc
SCALARS, VECTORS AND TENSORS
Consider the volume element below.
Prof. Yi-Xian Qin
Each of the six faces has a direction.
For example, this face
and this face
are normal to the y direction
A force acting on any