Midterm exam #2 is this Thursday, 1 Nov, 67:30 pm
bring
two
3x5 notecards, calculator, #2 pencils
Physics 140 – Fall 2007
30 October: lecture #16
7, 8, 9, 25, 26, 27
Angell Hall Aud A
13, 14, 15
Angell Hall Aud D
10, 23, 24
Angell Hall Aud B
4, 5, 6, 11, 12
MLB AUD 3
Discussion Sections
Midterm Exam Location
Ch 9 + 10 topics:
• moment of inertia: parallel axis theorem
• torque
• Newton’s second law of rotation
Given two
parallel
axes (lines), one passing
through an object’s center of mass and the
other displaced by a distance
h
, the object’s
moment of inertia about the displaced axis is
given by
where
M
is the object’s mass and
I
com
is the
moment of inertia measured about the axis
that passes through the object’s center of
mass.
I
=
I
com
+
Mh
2
Parallel axis theorem
M
,
I
com
h
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View Full Documentsolid sphere
A
solid sphere
C
hollow sphere
B
The three spheres above have the same mass
M
and the same
radius
R
.
Sphere B is hollow, A and C are solid.
Sphere C
rotates about an axis adjacent to its edge while spheres A and B
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 Fall '07
 Evrard
 Angular Momentum, Inertia, Moment Of Inertia, ICOM, Angell Hall Aud

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