Recall that the spring constant is inversely proportional to the number of coils in the spring, or that shorter springs equate to stiffer springs. An object is attached to the lower end of a 100-coil spring that is hanging from the ceiling. The spring stretches by 0.170 m. The spring is then cut into two identical springs of 50 coils each. As the drawing shows, each spring is attached between the ceiling and the object. By how much does each spring stretch? I know the equation F=-Kx applies...I know that it should be 2k and 1/2x from there confused?? * i tryed dividing 0.170 by 2 and times it by 2 ?? what do ??