3-FAM-02
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Contents
Outcomes
- Students are to recall W = mg and use it to find the weight for a range of masses
- To estimate the weight of an unknown mass and use their forcemeter to measure the weight
- To plot a force extension graph for their spring and explore proportionality.
- Use a force extension graph to find the weight of on unknown mass
- To evaluate their force meter design
Specification References
- none
Main Body of Lesson
Part A
- Students are to make their own force meter using acetate sheets and steel springs. They are to use the W = m g formula from 3-TAS-01 and mark the scale on their force meter with set weights.
Part B
- They can test their force meters by measuring the weight of various objects A,B and C of unknown mass.
Part C
- Students are to hang masses (again!!)on their force meter and measure the length of the spring.
- They are to record their results in a table
- Then plot a force vs. extension graph
- Lastly they hang the three original unknown masses on their force meter, measure the length of the spring, find the extension and use their graph to determine its weight.
Plenary
Homework
- There are questions on the 'Building your own forcemeter' sheet
Additional Information
Resources Required
Textbook References
- None
Website References
- None
Skills Addressed
Safety/Hazards
Notes
- None