Potential Energy and Conservation of energy

  • Thread starter msattar07
  • Start date
  • #1
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Homework Statement


How does the work required to stretch a spring 2cm compare with the work required to stretch a spring 1 cm?


Homework Equations


?


The Attempt at a Solution



i think its twice the work
 

Answers and Replies

  • #2
Hootenanny
Staff Emeritus
Science Advisor
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Assuming that the two springs are the same and Hookean, you are wrong.
 
  • #3
83
1
P.E. of a spring is 1/2kx^2 , which is directly proportional to the square of extension from the natural length
 
  • #4
348
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you can derive the expression for the potential enegy of the spring by integrating the hooke law over the distance moved.
 

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