4-FAD-02
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Contents
Outcomes
- Pupils can identify the force, pivot and perpendicular distance to the pivot for a range of machines/tools and are able to calculate the moment in Nm.
- Pupils understand how the force and distance are related to the moment. They will investigate the relationships by altering the force and measure distnce for a range of masses on a balanced system.
- Pupils are to understand the practical applications of changing the force and perpendicular distance for tools.
Specification References
- 1.23 recall and use the relationship between the moment of a force and its distance from the pivot: moment = force x perpendicular distance from the pivot
- 1.24 recall that the weight of a body acts through its centre of gravity
Starter
Main Body of Lesson
Forces circus
- File too large to upload - laminated copies are provided with the circus- copy in science
Plenary
- Set up a balloon which is electrostatically charged, on the ceiling, attach a string with a
Homework
- Labelling forces homework sheet
- file too large to upload - look in science shared
Additional Information
Resources Required
- Electrical Force - balloons for electrostatics, rice in a plastic bottle charging polythene rods and using watch glass show repulsion
Textbook References
- None
Website References
- None
Skills Addressed
Safety/Hazards
- A tank with water in it will be heavy and so is only to be moved by the technician; please refer to the Manual handling section of the Laboratory Lessons Health and Safety Risk Assessment
- When using springs goggles must be worn
- The main risk is from the vacuum pump and apparatus. The specific risk assessment must be read before using the apparatus.
- General Laboratory Health and Safety Risk Assessment
Notes
- None