Elastic potential

• what is elastic potential energy?

  Energy stored in a stretched or compressed object.
• applying a force is called "work"
• what does this image show?

  • no force acting- if applied force the spring will stretch = extension

  
• relationship between extension of the spring constant against force applied?

  directly proportional
• what is the limit of proportionality?

  Elastic limit.
• what is inelastic deformation?


  wont return to its original shape
• what is elastic deformation?


  will return to its original shape
• units for elastic potential energy?


  J
• units for spring constant?

  N/m
• units for extension?


  m
• a spring has an extension of 20cm. calculate the epe stored in the spring (k=100N/m)?

  20 - divide by 100=0.2

  0.5 x 100x0.2^2 = 2J