m2eg2avazerinaomiee m2eg2avazerinaomiee
  • 22-11-2016
  • Physics
contestada

a spring has a spring of 120 newtons per meter. calculate the elastic potential energy stored in the spring when it is stretched 2.0 centimeters. ...?

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MissPhiladelphia
MissPhiladelphia MissPhiladelphia
  • 24-11-2016
We know that force for a linear spring is equal to F=kx. Since energy is the potential to do work, and the spring is assumed to be perfectly elastic. Work can be written as:

W = F (integral sign) d
x

Therefore, 

W=k(Δx)^2 / 2
W = F 
Δx / 2
W = 120 (2.0) / 2
W = 120

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