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 | - |