Potential Energy of Springs
Although you don't see many examples of springs throughout our daily lives, one big example is the springs for our cars. You can determine the potential energy of a spring by using the equation PEs = (1/2)kx^2. For example, if a car has a spring constant of 30,000N/m and the spring compresses .1m after landing on the ground, you can determine it's potential energy by multiplying. So, (1/2)(30,000N/m)(.1m)^2 = 150J.
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