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SubjectPaid lesson

Simple machines 2

ClassNotes Team 4 MIN READUPDATED 14 JUN 2026

Theme: YOU AND ENERGY

Basic science   J.S.S.2   Second Term

WEEK 7

Simple machines 2

Performance Objectives

The student should be able to:

  1. Describe a gear
  2. State the method of application of efficiency of a simple machine
  3. State ways of maintaining a machine

Content

Gear

A gear is a wheel and axle that has teeth along with the wheel. Often they are used in combination with one another and change the direction of forces.

Gears are toothed, mechanical transmission elements used to transfer motion and power between machine components.  The size of the gear determines the speed at which it rotates. Gears are often used in machines to increase force or speed. Examples of machine that uses gear include cars, bicycles,…