SHS3 Physics · Semester 1 Week 2: Basic Physics

Lesson notes

Learning Objectives

Indicator: 3.1.1.LI.3 - State the conditions necessary for a body to be in equilibrium.

By the end of the lesson, learners can:

State the two conditions necessary for a body to be in equilibrium.
Distinguish between translational equilibrium and rotational equilibrium using simple examples.
Identify whether a given body or system is in equilibrium by checking both conditions.
Apply the conditions of equilibrium to explain the stability of everyday objects, such as a loaded metre rule on a knife edge or a person standing still.

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Curriculum details

Strand: Mechanics and Matter (Strand 1)
Sub-strand: Basic Physics (1.1)
Content standard: 3.1.1.CS.1 - Demonstrate knowledge and understanding of moments 3.1.1.LO.1 Use the concept of moments to determine the mass of a body
Indicator: 3.1.1.LI.3 - State the conditions necessary for a body to be in equilibrium.
Suggested placement: Semester 1, Week 2 (Week 2 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 149

Exemplars (from the NaCCA curriculum)

Experiential learning and Collaborative learning: From the experiment, let learners brainstorm and identify conditions that will cause disequilibrium of the set up used in verifying the principle of moments.
Foster an inclusive and supportive learning environment.
Assessment (3.1.1.AS.3). The document marks these depth-of-knowledge levels for this indicator: Level 1 Recall.
Teaching and Learning Resources:
- Metre rule,
- Standard masses,
- Knife edge
- Unknown masses. E.g., Stone, erasers, reference internet. books,