Rotational Kinematics
Torque
Rotational Energy
???
200

A wheel starts from rest and reaches an angular speed of 12 rad/s in 4.0 s. What is the angular acceleration?

3 rad/sec2

200

A 10 N force is applied perpendicularly to a wrench 0.25 m long. Find the torque.

2.5 Nm

200

A wheel with moment of inertia 2.0 kg*m2 spins at 5.0 rad/s. Find its rotational kinetic energy.

25 J

200

In the original Star Wars film, Luke Skywalker is given the lightsaber that belonged to his father, Anakin. What color was the crystal that powered it? 

Blue

400

A disk initially rotating at 5.0 rad/s accelerates uniformly at 2.0 rad/s2 for 6.0 s. Find its final angular speed.

17 rad/sec

400

A 20 N force is applied at a 30-degree angle to a 0.40 m lever arm. Find the torque.

4.0 Nm

400

A solid cylinder of mass 4.0 kg and radius 0.20 m rolls without slipping at 3.0 m/s. Find its rotational kinetic energy. (use 1/2mr2 for I)

3.6 J

400
Even after his ascension to Galactic Emperor, Palpatine's true identity as a Sith Lord remained secret to all but a select few. What was Palpatine's Sith title?

Darth Sidious

600

A wheel with constant angular acceleration rotates through 40 rad in 5.0 s, starting from rest.
Find the angular acceleration.
 

α = 3.2 rad/sec2

600

A rigid object with moment of inertia 4.0 kg*m2 experiences a net torque of 8.0 N. Calculate the angular acceleration.

2.0 rad/sec2

600

A hollow sphere (I = 2/3mr2) and a solid sphere (I = 2/5mr2) (same mass and radius) roll down a hill from the same height. Find the ratio of their speeds at the bottom.

sqrt(25/21) = 1.09

600

On what planet was Yoda stationed when Order 66 was issued?

Kashyyyk

800

A tire of radius 0.30 m spins up from rest to 20 rad/s in 5.0 s. Find the linear acceleration of a point on the rim.

1.2 m/s2

800

A uniform, horizontal rod of length 2.0 m pivots about one end. A 6.0 N force acts downward at its center.
Find the torque about the pivot.

6.0 Nm

800

A disk with I = 1.5 kg*m2 spins at 10 rad/s.
How fast must it spin to double its rotational kinetic energy?

14.1 rad/sec

800

The native Fremen of Arrakis give this name to the giant sandworms by what name, which translates to the "Great Immortal"?

Shai-Hulud

1000

A flywheel slows uniformly from 30 rad/s to rest in 10 s. Find the number of revolutions it makes before stopping.

24 revolutions

1000

A 3.0 kg disk of radius 0.40 m has a net torque of 4.8 Nm. What is the angular acceleration? (Use 1/2mr2 for I)

2.0 rad/sec

1000

A solid sphere rolls without slipping down a 2.0 m-high incline. Find its speed at the bottom. Use 2/5mr2 for I.

5.3 m/s

1000

Emperor Paul Muad’Dib Atreides held this title, the culmination of an ancient Bene Gesserit prophecy and eugenics program. 

What is the Kwisatz Haderach?

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