BRAINCAKEExam Style Question - 1
Question
A steel cable of length 20 m and cross-sectional area 2.0 × 10-4 m2 supports a load of 3.0 × 104 N. For this steel the Young modulus is 2.0 × 1011 Pa and the yield stress is 2.5 × 108 Pa.
(a) Calculate the stress in the cable. (1 mark)
(b) Explain whether the cable will return to its original length when the load is removed. (2 marks)
(c) Calculate the extension of the cable. (3 marks)
(d) Calculate the maximum load the cable can support before it yields. (2 marks)
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Key terms in this lesson
- young modulus
- The ratio of stress to strain for a material undergoing elastic deformation, a measure of its stiffness.
- yield stress
- The stress at the yield point, beyond which a material extends much more for little extra stress and deforms plastically.
More in Solid Materials
- The Young Modulus
- Stress-Strain Graph Metal Wire
- Experiment to Measure the Young Modulus
- Properties of Materials
- Exam Style Question - 1
- Exam Style Question - 1
- Springs in Series
- Springs in Parallel
All 14 lessons in Solid Materials · All Edexcel AS-level Physics topics