-
Bring your 2026 application questions to our open office hours with Emil Chuck, PhD, Director of Advising Services for HPSA, and get them answered live. Personal statements, secondaries, interview prep, school list strategy. Sunday, May 17 at 9 p.m. Eastern.
Springs
Started by orangeman25
The spring constant decreases.
Think about Young's Modulus (E)
E = tensile strength/tensile stress = Force per Area/Extension per Length = (F/A)/(x/l) = Fl/xA
if
E = Fl/xA
then
F = (EA/l)x = kx
so
k = EA/l
if you increase the length by adding coils, your k decreases by the length corresponding to the number of coils added. With this same logic, if you cut the coil into 2 parts, you will increase k by 2
Think about Young's Modulus (E)
E = tensile strength/tensile stress = Force per Area/Extension per Length = (F/A)/(x/l) = Fl/xA
if
E = Fl/xA
then
F = (EA/l)x = kx
so
k = EA/l
if you increase the length by adding coils, your k decreases by the length corresponding to the number of coils added. With this same logic, if you cut the coil into 2 parts, you will increase k by 2
