plumiStress-strain graphs and measuring the Young modulus (core practical 3): Edexcel International A Level Physics questions
Edexcel International A Level Physics past-paper questions on 1.4.2.4 Stress-strain graphs and measuring the Young modulus (core practical 3), 2019–2025, with mark schemes and examiner’s reports where available.
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Q18(c)(i)
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All 28 questions on Stress-strain graphs and measuring the Young modulus (core practical 3), as a list
- October 2024, AS Unit 1, Q18(c)(i) (2 marks): The sketch graph shows the stress-strain relationship for the spider silk up to its limit of proportionality. Stress Strain Add a line to the sketch graph to sh
- June 2024, AS Unit 1, Q9 (1 mark): A student attached one end of a wire to a support. The student added masses to the other end of the wire, as shown. The student measured the corresponding exten
- June 2024, AS Unit 1, Q16(a) (6 marks): The student clamped one end of a copper wire to the bench. The wire passed over a pulley and masses were added to the other end of the wire. A metre rule was fi
- January 2024, AS Unit 1, Q9 (1 mark): A force is applied to stretch two wires, P and Q, until the wires break. Each wire is made of a different metal. The stress-strain graph for each wire is shown.
- January 2024, AS Unit 1, Q17(a) (2 marks): The student used a micrometer to measure the diameter of the wire. Describe how the student should • check that the wire is uniform • check that the wire has a
- January 2024, AS Unit 1, Q17(b)(i) (2 marks): The student kept his feet away from the apparatus so that the masses could not fall on his feet. Explain one other safety precaution. (2)
- January 2024, AS Unit 1, Q17(b)(ii) (2 marks): Each time the student added more mass, Δx increased by a few mm. Explain why he should measure Δx using a vernier scale, instead of a metre rule. (2)
- January 2024, AS Unit 1, Q17(c) (5 marks): For each mass added, the student determined the force on the wire. The student plotted the graph shown. 12 10 8 Δx / mm 6 4 2 0 0 5 10 15 20 Force / N The table
- January 2024, AS Unit 3, Q3(d) (2 marks): In a different experiment, the student applied force to stretch the hair. He determined the average breaking stress for hair as 181 MPa with a percentage uncert
- January 2023, AS Unit 1, Q9 (1 mark): 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 exte
- January 2023, AS Unit 1, Q14(b)(i) (2 marks): Show that the Young modulus for this metal is about 2 × 10 (2)
- October 2022, AS Unit 1, Q12(a) (3 marks): The student had enough slotted masses to apply a weight of up to 150 N to the wire. The breaking stress for constantan is about 420 MPa. Deduce whether the wire
- October 2022, AS Unit 1, Q12(b)(ii) (2 marks): The relationship between the stiffness k of the wire and the Young modulus E is given by EA k = x where x is the unstretched length of the wire and A is the cro
- October 2022, AS Unit 3, Q4(c)(iii) (2 marks): The student recorded the following measurements for the plastic beam. l / cm 30 w / mm 20 h / mm 10 Determine E, in GPa, for the plastic beam. (2) E = GPa
- June 2022, AS Unit 1, Q4 (1 mark): The graph shows the relationship between tensile stress and tensile strain for a material. breaking point Tensile stress elastic limit Tensile strain Which of t
- October 2021, AS Unit 1, Q14(b)(i) (2 marks): Determine the gradient of the graph. (2) Gradient =
- October 2021, AS Unit 1, Q14(b)(ii) (3 marks): Determine the Young modulus of stainless steel using your value for the gradient. (3) Young modulus =
- June 2021, AS Unit 1, Q9 (1 mark): A copper rod was placed under tensile stress and the tensile strain in the rod was measured. The graph shows how the tensile stress required to cause a tensile
- January 2021, AS Unit 1, Q16(b)(i) (3 marks): Determine the Young modulus of the sample. (3) Young modulus =
- October 2020, AS Unit 1, Q19(b)(i) (2 marks): Show that the Young modulus of steel is about 2 × 1011 Pa. (2)
- January 2020, AS Unit 1, Q14 (6 marks): *14 When concrete is placed under stress, cracks may form. Scientists are investigating ways to prevent cracks from spreading through the concrete. One way to d
- January 2020, AS Unit 1, Q18(b)(ii) (3 marks): The student plotted a graph of m against Δ x. She measured the gradient and obtained a value of 195 kg m−1. Determine the Young modulus of the copper. length of
- January 2020, AS Unit 1, Q18(b)(iii) (2 marks): The experiment was repeated by another student, using a 2.00 m length of the copper wire. Suggest how the values obtained for the gradient and hence the Young m
- June 2019, AS Unit 1, Q6 (1 mark): A graph of stress ı against strain İ, up to the breaking point, is drawn for four samples of wire, A, B, C and D. Which sample of wire has both a low elastic li
- June 2019, AS Unit 1, Q16(b) (4 marks): The student calculated the extension of the copper wire for each applied load. She then plotted a graph of load against extension. 10 – 8 – 6 – 4 – 2 – 0 – 0
- June 2019, AS Unit 1, Q16(c) (6 marks): Explain why the sample of wire used in this experiment should be long and thin. (6)
- January 2019, AS Unit 1, Q17(a) (4 marks): As the concrete dries its Young modulus increases. Show that the value for the Young modulus of the concrete after it has dried is at least 1.3 times greater. (
- January 2019, AS Unit 1, Q17(c) (3 marks): Manufacturers recommend leaving concrete blocks to dry for at least 28 days before use. Discuss why. (3)
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