Unit 1 · Space, time and motion · Topic 1.4

IB Physics HL — Rigid body mechanics (HL)

Topic 1.4 of IB Physics covers Rigid body mechanics (HL), which is part of Unit 1: Space, time and motion. Students explore key concepts including Torque and rotational motion, Moment of inertia, Conservation of angular momentum. A strong understanding of rigid body mechanics (hl) is essential for IB Physics HL exams and builds the foundation for connected topics across the syllabus.

Exam technique guide Practice questions

What you'll learn in Topic 1.4

1.4.1 Torque and rotational motion
1.4.2 Moment of inertia
1.4.3 Conservation of angular momentum

Suggested study order: Read the notes for each sub-topic below → test yourself with flashcards → attempt practice questions → review exam technique.

Study resources — 1.4 Rigid body mechanics (HL)

1.4.1

Torque and rotational motion

Notes

1.4.2

Moment of inertia

Notes

1.4.3

Conservation of angular momentum

Notes

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Topic 1.4 Rigid body mechanics (HL) forms a core part of Unit 1: Space, time and motion in IB Physics HL. Mastering these concepts will strengthen your understanding of connected topics across the syllabus and prepare you for exam questions that require analysis, evaluation, and real-world application.

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