GCSE Physics – Energy – elastic potential

Last updated: 01/06/2020
Edexcel GCSE Science – Combined science higher Forces and matter GCSE Physics – Energy – elastic potential

Learning Objectives

-I can describe how elastic potential energy changes
-I can recall the units needed for F = kx
-I can rearrange F = kx
-I can use F = kx
-I can recall the units needed for E = ½ kx2^2
-I can rearrange E = ½ kx2^2
-I can use E = ½ kx2^2

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  1. Current
  2. Review
  3. Answered

  1. What is true for springs?

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  2. What is the Hooke’s law equation?

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  3. What does F stand for in the Hooke’s law equation?

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  4. What does k stand for in the Hooke’s law equation?

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  5. What does x stand for in the Hooke’s law equation?

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  6. What is force measured in?

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  7. What is elastic potential energy (EPE)?

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  8. How is elastic potential energy calculated?

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  9. What is the spring constant?

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  10. What is elastic potential energy measured in?

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  11. What is extension measured in?

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  12. What is the spring constant measured in?

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  13. When is the formula for elastic potential energy correct?

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  14. What is the limit of proportionality?

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  15. How can we change the elastic potential energy of an object?

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  16. How else can we change the elastic potential energy of an object?

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  17. If extension doubles, what happens to elastic potential energy?

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  18. Convert 10 mN/cm into N/m.

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  19. Convert 0.001 GN/m into N/cm.

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  20. If two springs with the same spring constant 150 N/m have 150 J and 600 J of energy each,

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  21. What is the elastic potential energy if extension is 20 cm and k is 4 N/m?

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  22. What is the elastic potential energy if extension is 50 cm and k is 25 N/m?

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  23. What is the elastic potential energy if k is 50 N/m and extension is 1.2 m?

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  24. A spring of constant 6 N/m is extended 30 cm. What is the elastic potential energy?

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  25. What extension of a spring with constant 8 N/m would result in 144 J of elastic potential energy being stored?

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