Rotational motion written questions
Practise H3 Physics rotational kinematics, torque, angular momentum and energy through written questions with marking guidance.
Learning goals
- Use angular displacement, angular velocity and angular acceleration for a rigid body rotating about a fixed axis
- Solve problems with the equations of motion for uniform angular acceleration
- Use angular momentum and moment of inertia for a rotating rigid body
- Calculate the moment of inertia of simple bodies about an axis, using calculus or the parallel-axis theorem
- Use torque as the rate of change of angular momentum to solve problems, including bodies with a changing moment of inertia such as an ice-skater
- Apply Eₖ,rot = ½Iω² to the rotational kinetic energy of a rigid body.
- Derive Eₖ,rot = ½Iω² for a rigid body from the equations of motion.
- Treat rigid-body motion as translation of the centre of mass plus rotation about it, including rolling without slipping with F ≤ µN
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Paper instructions
Practise
Practise questions on the skills you are learning. This is for practice only and doesn’t count towards your course progress.
- Question count is checked before you start.
- About 10 minutes.
- Feedback appears after you check each answer.
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Beyond the syllabus: optional enrichment that does not count towards your progress.