Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
HOOKE'S LAW
16 practice questions
Practice questions
1–10 of 16
Question 1
4 marks · Easy
Answer and see the solution →A student investigates how a metal spring stretches when forces are applied. The table below shows her results.
Spring stretching experiment data Force / N Length / cm 0 4.5 2 5.1 4 5.7 6 6.3 8 6.9 (a)[2 marks]Calculate the extension of the spring for each force value. Complete the table below.
Force / N Extension / cm 0 2 4 6 8 (b)[1 mark]What was the original (unstretched) length of the spring?
(c)[1 mark]Does this spring obey Hooke's law in the range shown? Give a reason for your answer.
Question 2
2 marks · Easy
Answer and see the solution →Describe what is meant by the ‘elastic limit’ of a spring and what happens to the spring if it is stretched beyond this point.
Question 3
1 mark · Easy
Answer and see the solution →Give one example of a material that is elastic and one example of a material that is not elastic, explaining your choices.
Question 4
3 marks · Easy
Answer and see the solution →Rubber bands and metal springs behave differently when stretched. Read the statements below and answer the questions.
(a)[2 marks]Describe how the force-extension graphs differ for a rubber band and a metal spring.
(b)[1 mark]State which one follows Hooke's law and which one does not.
Question 5
2 marks · Easy
Answer and see the solution →A spring is 12.0 cm long without any load. A force of 5.0 N extends it to 13.5 cm. Calculate the spring's extension produced by this force. Give your answer in cm.
Question 6
1 mark · Easy
Answer and see the solution →State Hooke’s law.
Question 7
2 marks · Easy
Answer and see the solution →Explain how you would check if a metal wire obeys Hooke’s law in a laboratory experiment.
Question 8
3 marks · Normal
Answer and see the solution →A metal wire is stretched by attaching weights. The original length of the wire is 50.0 cm. With a 10 N force, the length becomes 50.8 cm.
(a)[1 mark]Calculate the extension of the wire.
(b)[2 marks]If the extension is proportional to the force for this wire, what would its length be when a 25 N force is applied?
Question 9
3 marks · Normal
Answer and see the solution →Rubber bands are often used to hold objects together. When you stretch a rubber band, you notice that the extension does not increase evenly as you add more force.
(a)[2 marks]Explain how the force-extension graph for a rubber band would look different to the graph for a metal spring.
(b)[1 mark]Give one reason why a rubber band does not obey Hooke’s law.
Question 10
3 marks · Normal
Answer and see the solution →A student is asked to describe the elastic behaviour of different materials.
(a)[1 mark]What does it mean if a material behaves elastically?
(b)[2 marks]Give an example of a material that shows elastic behaviour and one that shows plastic behaviour.