How to find energy stored in a wire

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SUMMARY

The discussion focuses on calculating the energy stored in a high tensile steel wire under stress. The wire weighs 1000 tonnes and is stressed to 1000 MPa. The initial steps involve using the formula for stress, σ = P/A, and converting the weight of the wire into force by multiplying by gravitational acceleration (9.8 m/s²). The next critical step is to determine the volume of the wire using its material properties, which is essential for calculating the stored energy accurately.

PREREQUISITES
  • Understanding of stress and strain concepts in materials science
  • Familiarity with the formula σ = P/A for calculating stress
  • Knowledge of gravitational force and its application in weight calculations
  • Basic principles of material properties, particularly for high tensile steel
NEXT STEPS
  • Research the Young's modulus of high tensile steel to relate stress and strain
  • Learn how to calculate the volume of a wire using its density and mass
  • Study the formula for elastic potential energy stored in materials
  • Explore practical applications of energy storage in materials under stress
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Engineers, materials scientists, and students studying mechanics of materials who are interested in understanding energy storage in stressed materials.

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There are 1000 tonnes of high tensile steel wire stressed to 1000MPa. How much energy is stored in the steel?



[itex]\sigma = P/A[/itex]



First I multiplied the 1000 tonnes (1000000kg) by 9.8m/s^2. Then I found the volume by dividing the weight by the original weight. I don't know what to do next. I am not even sure if i am going in the right direction or which equation i should use. Any help is appreciated.
 
Physics news on Phys.org
If something streaches, its weight does not change. It gets thinner but longer. Hint: Find the volume by using metal properties.
 

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