This quiz in 'Chapter 8: Rotational Motion' assesses understanding of key concepts like angular displacement, velocity, and acceleration. It explores rotational dynamics through practical scenarios such as merry-go-round movements, focusing on differences in linear and angular velocities.
Meters per second.
Radians per second.
Omegas per second.
Arcs per second.
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The first applied perpendicular to the door
The second applied at an angle
Both exert equal non-zero torques
Both exert zero torques
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0.50 m/s
1.0 m/s
2.0 m/s
4.0 m/s
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0.79 rad/s
1.6 rad/s
3.1 rad/s
6.3 rad/s
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19.4 m/s
22.4 m/s
25.0 m/s
32.7 m/s
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Meters.
Radians.
Revolutions.
Arcs.
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24.7 s
27.4 s
42.7 s
47.2 s
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0.857 rad/s^2
1.17 rad/s^2
3.00 rad/s^2
3.50 rad/s^2
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1.1 m
1.8 m
7.1 m
13 m
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Increases by a factor of 6
Increases by a factor of 12
Increases by a factor of 18
Increases by a factor of 54
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190 N
380 N
19 N
38 N
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2.5 N*m
5.0 N*m
40 N*m
80 N*m
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0.63 rad/s
0.31 rad/s
0.16 rad/s
0.079 rad/s
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0.50 * 10^3 kg
1.0 * 10^3 kg
1.5 * 10^3 kg
2.0 * 10^3 kg
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0.033:1
0.067:1
0.33:1
0.67:1
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0.50 Hz
1.0 Hz
2.0 Hz
4.0 Hz
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2.0 rps
3.3 rps
7.5 rps
10 rps
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It does not change.
It increases.
It decreases.
It changes, but it is impossible to tell which way.
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0.42 rad/s
2.6 rad/s
160 rad/s
240 rad/s
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-1.80 rad/s^2
-0.90 rad/s^2
-5.65 rad/s^2
-11.3 rad/s^2
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300 N
150 N
30 N
15 N
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The boy
The girl
Both have the same non-zero angular velocity.
Both have zero angular velocity.
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The first at the midpoint
The second at the doorknob
Both exert equal non-zero torques
Both exert zero torques
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Mass
Moment of inertia
Torque
Angular velocity
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3.1 m
41 m
90 m
180 m
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The boy
The girl
Both have the same non-zero translational velocity.
Both have zero translational velocity.
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Increases
Decreases
Remains constant
None of the above
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11 rad
9.0 rad
7.0 rad
4.5 rad
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Rotate with constant angular velocity.
Rotate with constant angular acceleration.
Having an increasing moment of inertia.
Having a decreasing moment of inertia.
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20 m/s
25 m/s
35 m/s
65 m/s
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3.0 m/s
5.9 m/s
7.1 m/s
24 m/s
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0.071 m
0.71 m
7.1 m
71 m
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It continually increases.
It continually decreases.
It remains constant.
It increases during some parts of the orbit, and decreases during others.
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57.6 J
64.0 J
78.8 J
122 J
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2.
8.
10.
4.
6.
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0.40 m/s^2
0.80 m/s^2
4.0 m/s^2
8.0 m/s^2
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53.8 rev
26.9 rev
338 rev
169 rev
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2.25 rad/s
4.60 rad/s
6.25 rad/s
0.81 rad/s
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9.26 m/s^2
2.96 m/s^2
6.29 m/s^2
Zero
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The boy
The girl
Both have the same non-zero centripetal acceleration.
Both have zero centripetal acceleration.
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Kinetic friction between the rolling object and the ground.
Static friction between the rolling object and the ground.
Tension between the rolling object and the ground.
The force of gravity between the rolling object and the Earth.
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2.
8.
4.
10.
6.
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1/4.
1/2.
2.
4.
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1:1.
1:2.
2:1.
1:3.
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1.2 * 10^11 m
1.8 * 10^11 m
2.4 * 10^11 m
3.0 * 10^11 m
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9.0°
15°
54°
96°
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9.4 rpm
30 rpm
60 rpm
720 rpm
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0.95 rpm
0.83 rpm
0.075 rpm
0.094 rpm
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