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Question 10

A load-bearing alloy cable in an engineering truss has a cross-sectional area of 4.8 × 10-6 m2 and is subjected to a tensile force of 820 N. The resulting strain measured in the cable is 0.13%.

Which value of the Young modulus of the alloy, in Pa\text{Pa}Pa, is correct and expressed to an appropriate number of significant figures?

A

1.3×1091.3 \times 10^91.3×109

B

1.31×1091.31 \times 10^91.31×109

C

1.3×10111.3 \times 10^{11}1.3×1011

D

1.31×10111.31 \times 10^{11}1.31×1011

Markscheme

Materials Questions

  1. A Level
  2. /Physics
  3. /Materials

15 exam-style questions on OCR A A Level Physics Materials, covering Springs and Mechanical properties of matter. Each one has a worked solution and a mark scheme showing where the marks go.

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