Rotational Kinetic Energy Worksheet
Explore rotational kinetic energy, moment of inertia, and angular velocity with this worksheet covering key concepts and calculations for Grade 9 science students.
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Rotational Kinetic Energy Worksheet
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Read each question carefully and provide your best answer. Show all your work for calculation problems.
1. Which of the following best describes rotational kinetic energy?
Energy due to an object's linear motion.
Energy stored in an object due to its position.
Energy due to an object's rotation.
Energy associated with an object's temperature.
2. The moment of inertia of an object depends on:
Only its mass.
Only its angular velocity.
Its mass distribution and its shape.
Its linear velocity.
3. The formula for rotational kinetic energy is KE_rot = .
4. Moment of inertia is the rotational analogue of in linear motion.
5. A solid disk and a hoop of the same mass and radius are rolled down an incline. Which will reach the bottom first and why?
6. A flywheel has a moment of inertia of 2.5 kg·m² and is rotating at an angular velocity of 10 rad/s. Calculate its rotational kinetic energy.
7. Increasing an object's angular velocity will decrease its rotational kinetic energy.
True
False