How Many Dynes to Change Length of Spring by 20cm?

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SUMMARY

The discussion centers on calculating the force required to change the length of a spring by 20 cm, given that 100 dynes are needed to change it by 5 cm. The conclusion is that since springs operate linearly, the required force for a 20 cm change is indeed 400 dynes. Participants confirm the use of Hooke's Law, represented by the formula Fspring = k * x, where k is the spring constant and x is the displacement.

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  • Understanding of Hooke's Law and its application in spring mechanics.
  • Familiarity with the concept of spring constant (k).
  • Basic knowledge of force measurement in dynes.
  • Ability to perform linear calculations and proportional reasoning.
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  • Study the derivation and application of Hooke's Law in various contexts.
  • Explore the concept of spring constant and how it varies with different materials.
  • Learn about the implications of non-linear springs and their behavior under different forces.
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Students and professionals in physics, mechanical engineering, and anyone interested in understanding the principles of spring mechanics and force calculations.

tuffshorty
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The question is... suppose it requires 100 dynes to change the length of a certain spring 5 cm. What force is required to change the length of the spring 20 cm?

Would you just multiply it... and say it would take 400 dynes?
 
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Sounds good to me :smile: Springs are linear. If you wanted to be more formal about it, you could find the spring constant k from Fspring=k*x since you know Fspring and you know x.
 
Okay, thank you! Just wanted to make sure i wasn't missing a formula somewhere
 

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