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WorksheetsAngular Kinematics Quiz 2020 (AP)
Total questions: 10
Worksheet time: 25mins
Name
Class
Date
1.
What is the angular speed about the rotational axis of the Earth for a person standing on the surface?
a)
7.3 x 10-5 rad/s
b)
3.6 x 10-5 rad/s
c)
6.28 x 10-5 rad/s
d)
3.14 x 10-5 rad/s
2.
A spool of thread has an average radius of 1.00 cm. If the spool contains 62.8 m of thread, how many turns of thread are on the spool? "Average radius" allows us to not need to treat the layering of threads on lower layers.
a)
100
b)
1000
c)
3140
d)
62800
3.
A Ferris wheel, rotating initially at an angular speed of 0.50 rad/s, accelerates over a 7.0-s interval at a rate of 0.040 rad/s2. What is its angular speed after this 7-s interval?
a)
0.2 rad/s
b)
0.3 rad/s
c)
0.46 rad/s
d)
0.78 rad/s
4.
You apply force to a wrench to tighten a bolt. The wrench breaks in half. Select the best answer for what happens next. Assume the force applied remains constant.
a)
The torque is now half of what it was, because torque and distance are inversely proportional
b)
The torque is now half of what it was, because torque and distance are directly proportional
c)
The torque is now double of what it was, because torque and distance are inversely proportional
d)
The torque is now double of what it was, because torque and distance are directly proportional
5.
If the translational velocity of an object is 3 m/s, and is located a distance of 2 m from the axis of rotation, what is the object's angular velocity?
a)
0.67 rad/s
b)
1.5 rad/s
c)
5 rad/s
d)
6 rad/s
6.
If a wheel is turning at a rate of 3 rotations/sec and a larger wheel is turning at 3 rotations/sec, which wheel has greater angular speed?
a)
The larger wheel since its diameter is bigger
b)
The smaller wheel because it has to turn more to cover the same ground.
c)
The larger wheel since its circumference is greater.
d)
Neither since angular speed is not dependent on diameter or radius.
7.
A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s2. What is the time interval required for it to reach a 4.2 rad displacement after starting from rest
a)
1.8 s
b)
2.0 s
c)
16 s
d)
18 s
8.
A 0.12-m-radius grinding wheel takes 5.5 s to speed up from 2.0 rad/s to 11.0 rad/s. What is the wheel's average angular acceleration?
a)
9.6 rad/s/s
b)
4.8 rad/s/s
c)
3.1 rad/s/s
d)
1.6 rad/s/s
9.
A gear spins at a rate of 400 revolutions/minute. Which choice is closest to its angular speed in radians/second?
a)
6.67 rad/s
b)
2500 rad/s
c)
41.9 rad/s
d)
20.9 rad/s
10.
A tire of 68cm in diameter travels 9.2km. How many revolutions does it make?
a)
43.00 rads
b)
567 revs
c)
4300 revs
d)
68cm
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