The potential energy in an elastic string of force constant K which has been extended by X metres is expressed as by Sunday | May 20 | Physics WAEC | 0 comments A. ½kX² B. kX² C. ½kX D. kX Correct Answer: Option A A. ½kX² Users Also Read These:The potential energy in an elastic string of force…An electric string of length l is elastically…A body of mass 2kg is suspended from the ceiling of…A stone tied to a string is made to revolve in a…When an elastic material is stretched by a force,…