Chapter 11 Rolling, Torque, and Angular Momentum

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Chapter 11
Rolling, Torque, and Angular Momentum In this
chapter we will cover the following
topics -Rolling of circular objects and its
relationship with friction.
-Redefinition of torque
as a vector to describe rotational problems that
are more complicated than the rotation of a rigid
body about a fixed axis.
-Angular momentum of
single particles and systems of particles.

-Newtons second law for
rotational motion.
-Conservation of angular momentum.

-Applications of the conservation of angular
momentum.
The world is filled with cars, trucks,
motorcycles, bicycles, skateboards, in-line
skates, street luge, Segway, and other rolling
vehicles.
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11.2   Rolling as Translation and Rotation
Combined
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11.3   The Kinetic Energy of Rolling
A rolling object has two types of kinetic energy
a rotational kinetic energy due to its
rotation about its center of mass and a
translational kinetic energy due to
translation of its center of mass.
Rolling as Pure Rotation
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Problem 2, Page 297
2.   An automobile traveling at 80.0 km/h has
tires of 75.0 cm diameter. (a) What is the
angular speed of the tires about their axles? (b)
If the car is brought to a stop uniformly in 30.0
complete turns of the tires (without skidding),
what is the magnitude of the angular acceleration
of the wheels? (c) How far does the car move
during the braking?