Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
HOOKE'S LAW
16 practice questions
Practice questions
1–7 of 7 · Normal
Question 1
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 2
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 3
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.
Question 4
4 marks · Normal
Answer and see the solution →A student investigates how extension varies with force for a metal wire. Their setup uses a half-metre rule, clamp stand, and a set square to improve measurement accuracy.
(a)[2 marks]Describe two ways the student can ensure the measurements of the wire's extension are accurate in this investigation.
(b)[2 marks]Explain why the spring or wire should not be stretched beyond its elastic limit during this experiment.
Question 5
2 marks · Normal
Answer and see the solution →A spring has an original length of 14.6 cm. When a force of 3.5 N is applied, the length of the spring increases to 16.1 cm. Calculate the extension of the spring produced by the force. Give your answer in centimetres.
Question 6
2 marks · Normal
Answer and see the solution →Explain what is meant by the elastic behaviour of a material. Give an example of when this property is useful in everyday life.
Question 7
1 mark · Normal
Answer and check →Which statement best describes the force-extension graph for a metal spring obeying Hooke’s law?
- A.It is a horizontal line.
- B.It is a straight line passing through the origin.
- C.It is a curve that increases at higher forces.
- D.It is a straight line that does not pass through the origin.