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WorksheetsAngular Kinematics & Uniform Circular Motion
Total questions: 21
Worksheet time: 11mins
The "centrifugal force" describes what actual physics phenomena?
Mass
Weight
Rotational Motion
Inertia
What does the term "centripetal" mean?
Center-fleeing
Center-seeking
Rotation
Circular
Centripetal force isn't a new force, but an existing force. What other 2 forces in the choices below can the centripetal force be?
Weight
Friction
Tension
Air Resistance
Normal
Why do clothes in a washing machine fling outward along the edge of the drum?
Centripetal force isn't enough to pull them into the center of the drum, so the clothes are flung outward toward the edge of the drum due to inertia
Gravity pulls the clothes to the outside of the drum
Centripetal force is enough to pull them into the center of the drum, pushing them outward toward the edge of the drum
The weight of the clothes is greater because they are weight, so the clothes are pulled toward the center
When driving around a curve, why do you lean the opposite direction of a turn?
Gravity
Weight
Inertia
Friction
What does the term "tangential" mean?
Moving Forward
Moving in a Circle
Moving in a straight line
Moving Around
In uniform circular motion, there is a
Constant Speed
Constant Angular Velocity
Zero Acceleration
Net Tangential Acceleration
If the centripetal force on a particle in uniform circular motion is decreased,
The tangential speed remains constant
The tangential speed will increase
The radius of the circular path will decrease
The tangential speed will decrease and/or the radius will increase
The angular acceleration in circular motion
Equal in magnitude to the tangential acceleration divided by the radius
Increases the angular velocity in the same direction
Has units of s2rad (s−2)
All of the above
Is there an example when a car can experience centripetal and angular acceleration?
No; both accelerations cannot act at the same time
Yes; when the car is moving in a straight line
No; the car only experiences centripetal acceleration around a curve
Yes; when a car is changing its speed around a curve
When an object rotates in circular motion, it has
Only tangential velocity
Only angular velocity
Both tangential and angular velocity
Neither tangential or angular velocity
The driver of a truck sets the cruise control and ties the steering wheel so that the truck travels at a uniform speed of 18 m/s in a circle with a diameter of 150 m. Through what angular displacement does the car move in 7.00 min?
100.8 rad
0.24 rad
1.69 rad
50.4 rad
If the angular displacement of a truck is 101 radians and the radius about the central axis is 75 m, what arc distance does the truck complete?
7,575 m
1.35 m
0.74 m
471.2 m
A car on a circular track with a radius of 0.47 km accelerates from rest with a constant angular acceleration of magnitude 6.5 x 10−3 s2rad . How long does it take the car to make one lap around the track?
44 s
1,933 s
31 s
967 s
What is the tangential acceleration of a truck with an angular acceleration of 6.5 x 10−3 s2rad going around a circular track with a radius of 0.47 km?
3.06 s2m
3.06 x 10−3 s2m
1.38 x 10−2 s2m
1.38 x 10−5 s2m
A CD disc rotates at a low speed at 10,000 rpm. When the disc rotates at a higher speed, the rotation increases uniformly to 12,500 rpm in 2.5 s. What is the magnitude of the angular acceleration of the CD disc?
105 s2rad
1.2 s2rad
1,000 s2rad
524 s2rad
A CD disc has an angular acceleration of 105 s2rad when it increases from a low speed of 10,000 rpm to a high speed of 12,500 rpm. What is the angular displacement the disc goes through while it's accelerating?
2,939 rad
1.25 rad
5,879 rad
308, 636 rad
What is the period and frequency of revolution of a fan blade that spins at 450 rpm?
T = 0.13 s
f = 7.5 Hz
T= 7.5 s
f = 0.13 Hz
T= 0.014 s
f = 74.02 Hz
T= 74.02 s
f= 0.014 Hz
A car with a constant speed of 72 hrkm enters a circular flat curve with a radius of curvature of 0.150 km. What is the coefficient of friction that the tires must have in order to safely round a curve?
0.27
0.014
2.67
0.13
A wheel of radius 2.25 m rotates at a uniform speed. If a point on the rim of the wheel has a centripetal acceleration of 3.5 s2m , What is the tangential velocity at this point?
2.8 m/s
7.9 m/s
1.6 m/s
1.2 m/s
A wheel of radius 2.25 m rotates at a uniform speed. If a point on the rim of the wheel has a centripetal acceleration of 3.5 s2m , what is the angular velocity at this point?
1.2 rad/s
1.6 rad/s
2.8 rad/s
7.9 rad/s
