Class 11 Physics simulations · Mechanical Properties of Solids

Elastic energy stored in a wire

Load a wire and calculate the strain energy stored per unit volume.

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What to notice

Doubling the load doubles the extension, so the stored energy rises four times.

Key relation

U = ½ F ΔL = ½ × stress × strain × volume

Try this

Double the force and compare the energy stored.

What you can change

• Load F: 0 to 1500 N
• Wire length: 0.5 to 4 m
• Diameter: 0.5 to 3 mm
• Young’s modulus: 50 to 210 GPa

More in Mechanical Properties of Solids

• Compression and bulk modulus
• Stretching a spring
• Poisson’s ratio: stretch and thin
• Shear deformation
• Springs in series and parallel
• Stress–strain curve
• Thermal stress in a clamped rod
• Young’s modulus

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