The potential energy in an elastic string of force constant K which has been extended by X metres is expressed as By: Sunday|Published on: May 20|Categories: Physics WAEC| 0 comments A. ½kX² B. kX² C. ½kX D. kX Correct Answer: Option A A. ½kX² Users Also Read These:When an elastic material is stretched by a force,…A body of mass 8kg moving with a speed of 30ms-1 is…A spiral spring of natural length 30.0cm and force…A string of length 5cm is extended by 0.04m when a…An elastic string of force constant 200N m-1 is…SEE ALSO A pressurized perfume bottle is left on the windowpane of a room. What happens to the gas molecules of the perfume on a sunny day? They