a spring of force constant k is cut into two equal parts,which are then joined parallel to each other.the force constant of the combined will be??? is the answer 'k'.can u verify it?

spring constant of spring of length L is K....

now k is inversly proportional to length ..

  so ,      K₂/K₁   = L₁/L₂                          

from here we can compare force constant of two different lengths of  wire of same material..

let force constant of each half is k¹ after cutting then

k¹/k = L/(L/2)

k¹ = 2k

both of these parts are connected parallel so net force constant = 2k+2k=4k

approve my ans if u like it