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Physics 125 2013 Assignment 8
Due in class on Friday November 29
Problem I
RHK Chapter 9, Exercise 24, pg. 202. Hint: The cube can be replaced by a square, as illustrated
in the figure; explain why.
Figure 1: The static equilibrium problem for a cube on
Physics 125: Assignment 1 Question 2
Einstein through the Looking Glass
When Einstein was a boy, he mulled over the following puzzle: A runner looks at himself in a
mirror that he holds at arms length in front of him. If he runs with nearly the speed of l
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Physics 125 2013 Assignment 6 Solution
Problem I
Chapter 8, Exercise 24, pg. 172.
This appears to be a bit of trick question, since they give the diameter of the thread, but the
number of turns per centimeter of horizontal travel is all that is needed.
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Physics 125 Assignment 3
Due in class on Friday September 26
This assignment has four mechanics problems, and the relativity problem that was previewed in the last assignment. Mechanics problems are all from the textbook by Resnick,
Halliday, and Krane,
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Physics 125 Assignment 3
Due in class on Friday September 26
Problem I: The ickering bulb paradox
I'm not including an explanation of how solve to this problem (though I'm happy to
discuss it during oce hours).
But the answer is . the bulb does icker ;)
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Physics 125 Assignment 2
Due class on Friday September 20
Important Note
At the end of this PDF you will find the first question from Assignment 3, which isnt
due until Friday September 26. However, that question is so tricky that you might need
extra t
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Physics 125 2013 Assignment 7 Solutions
Problem I
Here is the advertised variation on the problem of a man on a ladder that we analyzed at some
length in class: here the mass of the ladder is to be included at all stages of the calculation.
Figure 1: He
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Physics 125 2013 Assignment 9 SOLUTION
Problem I
Chapter 12, Exercise 18, pg. 273.
Solution
Figure 1: Textbook figure.
Ill choose the origin for the y-axis to be at the top of the spring before it is compressed by
the mass.
We have two conservative fo
PROBLEMS
ity should be abandoned."
c "Relativity does not even have a unique way to
ne space and time coordinates for the instanta37 space
us position of an object. Laboratory and rocket
this
Two
rockers of equal rest length are passing "head
servers typi
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Physics 125 Assignment 5
Due in class on Friday October 25
Problem I
Chapter 6, Problem 6, pg.
135:
This is a challenging problem, you might want to save it for
last.
Problem II
Chapter 6, Problem 16, pg. 136.
Problem III
Chapter 6, Problem 20, pg. 137.
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Physics 125 2013 Assignment 5 Solution
Problem I
Chapter 6, Problem 6, pg. 135:
Let's denote
Then the length
= M/L =
L0
mass/unit length of the chain.
of chain on the table at any moment has mass
the table exerts a supporting normal force
N
N
support
s
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Physics 125 Assignment 4
Solution
Note: Only problems I-IV are required for full credit: problem V is for bonus marks.
Only
problem II will be graded in detail: full credit will be given for a thorough attempt on any of the
other 3 questions, even if th
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Physics 125 Assignment 4
Due in class on Friday October 4
Note: Only problems I-IV are required for full credit: problem V is for bonus marks. Only one
of the rst four problems will be graded in detail: full credit will be given for a thorough attempt
o
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Physics 125 2013 Assignment 8 SOLUTION
Problem I
RHK Chapter 9, Exercise 24, pg. 202. Hint: The cube can be replaced by a square, as illustrated
in the figure; explain why.
Figure 1: The static equilibrium problem for a cube on a horizontal table, with
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Physics 125 2013 Assignment 6
Due in class on Friday November 1
Problem I
Chapter 8, Exercise 24, pg. 172.
Problem II
Figure 1: Rectangular plate with rotation axis through the CM (left) and through a corner
(right). RHK Figs. 9.14 and 9.43.
The rotatio
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Physics 125 2013 Assignment 7
Due in class on Friday November 8
Problem I
Here is the advertised variation on the problem of a man on a ladder that we analyzed at some
length in class: here the mass of the ladder is to be included at all stages of the c
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Physics 125 2013 Assignment 9
Due in class on Friday November 29
Problem I
Chapter 12, Exercise 18, pg. 273.
Problem II
Chapter 12, Exercise 23, pg. 274.
Bonus marks if you find the speed using free-body diagrams for the mass, pulley, and shell.
Its ea