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CAIE A-Level Physics AS 6.2.3 The Elastic Potential Energy of a Material Deformed Within Its Limit of Questions

Calculate elastic potential energy stored in a material deformed within its elastic limit.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Calculate elastic potential energy stored in a material deformed within its elastic limit.

CAIE A-Level Physics AS 6.2.3 The Elastic Potential Energy of a Material Deformed Within Its Limit of Questions question 1

[Maximum number: 1]

A length of metal wire is attached to a fixed point and hangs vertically. Masses are then suspended from the wire. Assume that the cross-sectional area of the wire remains constant.

Figure for Question CAIE A-Level Physics AS 6.2.3 The Elastic Potential Energy of a Material Deformed Within Its Limit of Questions question 1 — CAIE A-Level Physics AS

A stress-strain graph for the wire is plotted, as shown.

Figure for Question CAIE A-Level Physics AS 6.2.3 The Elastic Potential Energy of a Material Deformed Within Its Limit of Questions question 1 — CAIE A-Level Physics AS

What is represented by the shaded area under the graph?

A

strain energy in the wire

B

 strain energy in the wire  cross-sectional area of the wire \frac{\text { strain energy in the wire }}{\text { cross-sectional area of the wire }}

C

 strain energy in the wire  original length of the wire \frac{\text { strain energy in the wire }}{\text { original length of the wire }}

D

 strain energy in the wire  original volume of the wire \frac{\text { strain energy in the wire }}{\text { original volume of the wire }}

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