The potential energy in an elastic string of force constant k, which has an extension X is?
Answer Details
The correct answer is: ½KX2.
When an elastic string is stretched or compressed, it stores potential energy, which can be calculated using the formula for elastic potential energy:
Elastic potential energy = ½ * force constant * (extension)^2
In this case, the force constant is given as k, and the extension is given as X. So, the potential energy in the elastic string is:
Elastic potential energy = ½ * k * X^2
Therefore, ½KX2, is the correct answer.