Tensile strength = mamximum load it can take before it breaks
- attach the fibre to a clamp stand and hang a weight from the other end
- keep adding weights, one at a time, until the fibre breaks
- record the mass needed to break the fibre (the hgher the mass, the higher the tensile strength)
- repeat the experiment with different samples of the same fibre
- the fibres being tested should be the same length
- all other variables (like temperature and humidity) should be kept constant
- safety measures - goggles to protect eyes, leave weith drop are clear so they won't drop on feet
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