A symmetrical lever with some mass pieces each of which has a weight of 1.0 N.
The lever arms can be read from the coloured rectangles; one rectangle corresponds to 0.10 m. The lever is in balance when the applet is started. You can attach a new mass piece or put it to another place with pressed mouse button. In a similar way you can remove a mass piece by clicking on it.
Software/Applets used on this page
Based on free Java applets from Java Applets on Physics
Glossary
mass
a measure of the quantity of matter in an object
weight
a force which acts upon masses in a gravitational field. Near the surface of the Earth, the acceleration due to gravity is approximately constant; this means that an object's weight is roughly proportional to its mass. Weight and mass are fundamentally different quantities: mass is an intrinsic property of matter, whereas weight is a force that results from the action of gravity on matter: it measures how strongly gravity pulls on that matter.
This question appears in the following syllabi:
| Syllabus | Module | Section | Topic | Exam Year |
|---|---|---|---|---|
| AQA A-Level (UK - Pre-2017) | M2 | Moments | Basic moments | - |
| AQA A2 Maths 2017 | Mechanics | Moments and Units | Moments | - |
| AQA AS/A2 Maths 2017 | Mechanics | Moments and Units | Moments | - |
| CCEA A-Level (NI) | M1 | Moments | Basic moments | - |
| CIE A-Level (UK) | M2 | Moments | Basic moments | - |
| Edexcel A-Level (UK - Pre-2017) | M1 | Moments | Basic moments | - |
| Edexcel A2 Maths 2017 | Mechanics | Moments | Moments | - |
| Edexcel AS/A2 Maths 2017 | Mechanics | Moments | Moments | - |
| OCR A-Level (UK - Pre-2017) | M2 | Moments | Basic moments | - |
| OCR A2 Maths 2017 | Mechanics | Moments | Moments | - |
| OCR MEI A2 Maths 2017 | Mechanics | Moments | Moments | - |
| OCR-MEI A-Level (UK - Pre-2017) | M2 | Moments | Basic moments | - |
| Universal (all site questions) | M | Moments | Basic moments | - |
| WJEC A-Level (Wales) | M1 | Moments | Basic moments | - |