Rotational Kinetic Energy Worksheet
Explore the principles of rotational kinetic energy, moment of inertia, and angular velocity with this Grade 12 Physics worksheet.
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Rotational Kinetic Energy
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Read each question carefully and provide your answers in the space provided. Show all your work for calculations.
1. Which of the following best describes rotational kinetic energy?
Energy due to an object's linear motion.
Energy due to an object's motion around an axis.
Potential energy stored in a rotating object.
Energy associated with the object's temperature.
2. The moment of inertia (I) in rotational motion is analogous to which quantity in linear motion?
Velocity
Acceleration
Mass
Force
3. The formula for rotational kinetic energy is KE_rot = .
4. Angular velocity is measured in units of .
5. A larger moment of inertia means an object is to change its rotational state of motion.
6. A solid cylinder and a hollow cylinder of the same mass and radius are released from rest at the top of an incline. Which one will reach the bottom first and why? Assume they roll without slipping.
7. Explain how a flywheel stores energy. You may refer to the diagram below for a visual reference.
8. Rotational kinetic energy is always conserved in any rotating system.
True
False
9. Increasing the angular velocity of a rotating object will increase its rotational kinetic energy.
True
False
10. A uniform solid disk with a mass of 5.0 kg and a radius of 0.20 m is rotating about its central axis at an angular speed of 10 rad/s. Calculate its rotational kinetic energy. (Moment of inertia for a solid disk I = 1/2 MR²)