Rotational Dynamics

A wheel with a radius of .5m has a linear acceleration of 3m/s². What is the Angular acceleration?

• 1 rad/s²

• 4 rad/s²

• 6 rad/s²

• 2 rad/s²

A wheel with a radius of .8m has a linear acceleration of 6m/s². What is the Angular acceleration?

• 3.7 rad/s²

• 4.8 rad/s²

• 7.5 rad/s²

• 5.7 rad/s²

What is the angular displacement of the hour hand on a clock after 3 hours

• 1.82 rad

• 1.91 rad

• 1.57 rad

• 1.65

What is the angular displacement of the minute hand on the clock after 4 hours?

• 25.1 rad

• 24.8 rad

• 28.4 rad

• 25.8 rad

What is the Unit for Torque

• Nm
• N
• W
• J

What does the symbol Δω mean?

• angular acceleration

• angular velocity

• change in angular acceleration

• change in angular velocity

The time required for one complete revolution is:

• torque

• frequency

• period

• rotational kinetic energy

The lever arm is the ________ distance from the axis of rotation to the point where the force is exerted.

• angular

• displaced

• perpendicular

• none of these

Wheels with a diameter of 1 m have an angular velocity of 6 rad/s. What is the linear velocity?

• 6 m/s

• 6 rad/s

• 3 m/s

• 3 rad/s

Wheels with a radius of .5 m have an angular velocity of 6 rad/s. What is the linear velocity?

• 3 m/s

• 6 m/s

• 3 rad/s

• 6 rad/s