Which expression gives the work done by an ideal spring of force constant when it is…
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Which expression gives the work done by an ideal spring of force constant k when it is stretched from its natural length to an extension X?
(a) 21kX2
(b) −21kX2
(c) −kX2
(d) −41kX2