ROTATIONAL MOTION

What is the rotational kinetic energy of a body with moment of inertia I and angular velocity ω?

• Iω
• ½Iω²
• Iω²
• ½mv²

Which of the following best describes angular acceleration?

• Rate of change of angular displacement
• Rate of change of angular velocity
• Product of torque and moment of inertia
• Ratio of force to radius

In rotational motion, what is the analogue of mass in linear motion?

• Force
• Torque
• Velocity
• Moment of inertia

A wheel starts from rest and undergoes constant angular acceleration of 12.5 rad/s² through 10 rad. What is the final angular velocity?

• √200 rad/s
• √225 rad/s
• √250 rad/s
• √300 rad/s

What is the angular displacement of a wheel when 2 m of cord is unwound from a rim of radius 0.2 m?

• 5 rad
• 10 rad
• 15 rad
• 20 rad