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AS stress problem plz help

plz help

you are required to design a laboratory experiment to invstigate how the stress in a steel wire supporting a loaded bridge like structure is affected by the angle, 0 that the wire is verticle.

you should draw a diagram of the arrangement of your apparatus, and in your account you should pay particular attention to
1) the procedure to be followed
2)how the angle is determined
3)how the stress is determined
4)the range of angles that would be used
5)how the load is applied to the bridge-like structure
6)any safety precautions you would take when carrying out the investigation
7)particular features of the design that would ensure the accuracy and reliability of your results.

plz help

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