Question 1
1 markA student hangs a weight on a spring and it stretches. According to the syllabus, how many forces must be applied to a stationary object to change its shape by stretching or bending?
AQA GCSE · Physics 8463
Forces and elasticity: Practice Questions
5 multiple-choice questions marked as you go, and 3 written questions with worked solutions. All on Forces and elasticity.
8 questions20 marksFree, no account
Question 2
1 markA spring has a spring constant of \( 25 \text{ N/m} \). Calculate the force required to produce an extension of \( 0.20 \text{ m} \), assuming the limit of proportionality is not exceeded.
Question 3
1 markA force of \( 12 \text{ N} \) stretches a spring from an original length of \( 10 \text{ cm} \) to a new length of \( 16 \text{ cm} \). Calculate the work done in stretching the spring, assuming it behaves elastically.
Question 4
1 markA spring has a spring constant of \( 40 \text{ N/m} \). Calculate the extension of the spring when a force of \( 10 \text{ N} \) is applied, assuming the limit of proportionality is not exceeded.
Question 5
1 markA spring with a spring constant of \( 150 \text{ N/m} \) is compressed by \( 0.10 \text{ m} \). Calculate the elastic potential energy stored in the spring.
Question 6
2 marksA spring is stretched by a force of \( 4.0\text{ N} \). If the spring constant is \( 50\text{ N/m} \), calculate the extension of the spring in metres.
Write your answer out first, then check it against the worked solution.
Question 7
6 marksA spring with a spring constant of \( 150 \text{ N/m} \) is compressed by \( 0.10 \text{ m} \). Calculate the elastic potential energy stored in the spring and explain how this value would change if the compression was doubled, assuming the limit of proportionality is not exceeded.
Write your answer out first, then check it against the worked solution.
Question 8
7 marksA student investigates the extension of a spring by hanging weights from it. The spring has an original length of \( 0.15 \text{ m} \). When a mass of \( 400 \text{ g} \) is hung from the spring, the new length becomes \( 0.23 \text{ m} \). Assume the limit of proportionality is not exceeded and use \( g = 9.8 \text{ N/kg} \).
a) Calculate the weight of the mass. Give your answer to 2 significant figures.
b) Calculate the spring constant, \( k \), of the spring.
c) The student then replaces the mass with a different object, and the spring stores \( 0.25 \text{ J} \) of elastic potential energy. Calculate the extension of the spring produced by this object.
Write your answer out first, then check it against the worked solution.
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