Think you’ve got your head wrapped around Rotation? Put your knowledge to
the test. Good luck — the Stickman is counting on you!
Q. The wheels on the bus go round and round, round and round, round and round at 35 rad/s. If the wheels have a diameter of 40 cm, how long will it take them to move the bus 1 km?
5.7 s
11.4 s
28.6 s
71.4 s
142.9 s
Q. A Ferris wheel starts from rest. If it accelerates at 0.05 rad/s2 to a max rotational speed of 0.10 rad/s, how long will it take to make a complete revolution?
15.9 s
30.4 s
31.4 s
61.8 s
62.8 s
Q. What is the moment of inertia of a bola consisting of two weights of mass m connected to a rope by two strands of length r? 
mr2
2mr2
m2r4
m2r2
Q. How much more force does Vanna White need to spin the wheel of fortune at 2 rad/s2 when she pulls from a point near its green center, versus pulling on the edge of the wheel, 1 m away from the edge of the green circle? The wheel weighs 20 kg and has an overall radius of 1.6 m. 
19.2 N
26.7 N
34.1 N
53.3 N
106.7 N
Q. What is the torque created by holding a 5 kg dumbbell at a full arm's length (0.9 m) from your chest?
4.5 N · m
22.1 N · m
44.1 N · m
49.0 N · m
88.3 N · m
Q. A ship's captain turns his large steering wheel clockwise by applying a force of 30 N down on the ride side of the wheel with his right hand and an equal force of 30 N up on the left side of the wheel with his left hand. The wheel weighs 10 kg (mostly along the outside rim, like a hoop) and has a diameter of 1.2 m. What is its translational acceleration and its rotational acceleration?
0 m/s2, 0 rad/s2
0 m/s2, 5 rad/s2
0 m/s2, 10 rad/s2
3 m/s2, 5 rad/s2
6 m/s2, 10 rad/s2
Q. If no outside torque is applied, a spinning object that doubles its angular velocity must have:
halved its moment of inertia
doubled its moment of inertia
doubled its mass
divided its moment of inertia by four
doubled in size
Q. What is the angular momentum of a 1000 kg car traveling at 80 km/hr around a turn with a radius of 30 m?
22,222 kg · m2/s
666,667 kg · m2/s
1,333,333 kg · m2/s
2,400,000 kg · m2/s
20,000,000 kg · m2/s
Q. A ball is sliding along a frozen lake at 5 m/s, until it reaches the shore, where it starts to roll. What is its translational speed once it starts rolling?
3.87 m/s
4.23 m/s
5.00 m/s
5.92 m/s
5.98 m/s
Q. As a tire rolls along, it feels a torque of 10 N · m due to friction attempting to stop it. If the tire's radius is 20 cm and it is cylinder-shaped with a mass of 10 kg, how far will it travel before coming to a rest if it starts at 15 m/s?
2.25 m
11.25 m
22.5 m
45.0 m
56.25 m