Physics (AS & A Level) · May / June 2016 · Paper 11 · Question 3
A lift is supported by two steel cables, each of length 10 m and diameter 0.5 cm. The cables extend by 1 mm when a man of mass 80 kg steps into the lift. What is the best estimate of the value of the Young modulus of the steel?
- A2 × 10^10 N m^–2
- B4 × 10^10 N m^–2
- C2 × 10^11 N m^–2
- D4 × 10^11 N m^–2
As printed in the paper
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Correct answer: C. 2 × 10^11 N m^–2
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