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A student carries out an experiment to determine the Young modulus of copper - Edexcel - A-Level Physics - Question 9 - 2023 - Paper 1
Question 9
A student carries out an experiment to determine the Young modulus of copper. The student adds known masses to a copper wire and measures the corresponding extensio... show full transcript
Worked Solution & Example Answer:A student carries out an experiment to determine the Young modulus of copper - Edexcel - A-Level Physics - Question 9 - 2023 - Paper 1
Step 1
diameter and original length of the wire
Answer
The student should measure the diameter and the original length of the wire directly because these quantities are essential for calculating the Young modulus. The original length is needed to determine the strain, and the diameter is necessary for calculating the cross-sectional area, which is required for calculating stress.