Ch13

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Chapter 13
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The fan blade is slowing down. What are the signs
of
1. 2. 3. 4.
3
The fan blade is slowing down. What are the signs
of
1. 2. 3. 4.
4
Rank in order, from largest to smallest, the five
torques The rods all have the same
length and are pivoted at the dot.
1. 2. 3. 4. 5.
5
Rank in order, from largest to smallest, the five
torques The rods all have the same
length and are pivoted at the dot.
1. 2. 3. 4. 5.
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Rank in order, from largest to smallest, the
angular accelerations
1. 2. 3. 4. 5.
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Rank in order, from largest to smallest, the
angular accelerations
1. 2. 3. 4. 5.
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Four Ts are made from two identical rods of equal
mass and length. Rank in order, from largest to
smallest, the moments of inertia Ia to Id for
rotation about the dotted line.
1. Ic gt Ib gt Id gt Ia 2. Ic Id gt Ia Ib 3.
Ia Ib gt Ic Id 4. Ia gt Id gt Ib gt Ic 5. Ia gt
Ib gt Id gt Ic
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Four Ts are made from two identical rods of equal
mass and length. Rank in order, from largest to
smallest, the moments of inertia Ia to Id for
rotation about the dotted line.
1. Ic gt Ib gt Id gt Ia 2. Ic Id gt Ia Ib 3.
Ia Ib gt Ic Id 4. Ia gt Id gt Ib gt Ic 5. Ia gt
Ib gt Id gt Ic
10
A student holds a meter stick straight out with
one or more masses dangling from it. Rank in
order, from most difficult to least difficult,
how hard it will be for the student to keep the
meter stick from rotating.
1. c gt d gt b gt a 2. b c d gt a 3. c gt b gt d
gt a 4. b gt d gt c gt a 5. c gt d gt a b
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A student holds a meter stick straight out with
one or more masses dangling from it. Rank in
order, from most difficult to least difficult,
how hard it will be for the student to keep the
meter stick from rotating.
1. c gt d gt b gt a 2. b c d gt a 3. c gt b gt d
gt a 4. b gt d gt c gt a 5. c gt d gt a b
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Two buckets spin around in a horizontal circle on
frictionless bearings. Suddenly, it starts to
rain. As a result,
1. The buckets slow down because the angular
momentum of the bucket rain system is
conserved. 2. The buckets continue to rotate at
constant angular velocity because the rain is
falling vertically while the buckets move in a
horizontal plane. 3. The buckets continue to
rotate at constant angular velocity because the
total mechanical energy of the bucket rain
system is conserved. 4. The buckets speed up
because the potential energy of the rain is
transformed into kinetic energy. 5. None of the
above.
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Two buckets spin around in a horizontal circle on
frictionless bearings. Suddenly, it starts to
rain. As a result,
1. The buckets slow down because the angular
momentum of the bucket rain system is
conserved. 2. The buckets continue to rotate at
constant angular velocity because the rain is
falling vertically while the buckets move in a
horizontal plane. 3. The buckets continue to
rotate at constant angular velocity because the
total mechanical energy of the bucket rain
system is conserved. 4. The buckets speed up
because the potential energy of the rain is
transformed into kinetic energy. 5. None of the
above.
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Chapter 13 Reading Quiz
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A new way of multiplying two vectors is
introduced in this chapter. What is it called?
1. Dot Product 2. Scalar Product 3. Tensor
Product 4. Cross Product 5. Angular Product
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A new way of multiplying two vectors is
introduced in this chapter. What is it called?
1. Dot Product 2. Scalar Product 3. Tensor
Product 4. Cross Product 5. Angular Product
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Moment of inertia is
1. the rotational equivalent of mass. 2. the
point at which all forces appear to act. 3. the
time at which inertia occurs. 4. an alternative
term for moment arm.
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Moment of inertia is
1. the rotational equivalent of mass. 2. the
point at which all forces appear to act. 3. the
time at which inertia occurs. 4. an alternative
term for moment arm.
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A rigid body is in equilibrium if
1. 2. 3. neither 1 nor 2. 4. either 1 or 2. 5.
both 1 and 2.
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A rigid body is in equilibrium if
1. 2. 3. neither 1 nor 2. 4. either 1 or 2. 5.
both 1 and 2.