Increasing the stiffness of a mass-spring system, represented by the spring constant k in Hooke's law, leads to an increase in the frequency of oscillation. This relationship is derived from the equation for angular frequency, ω = √(k/m), indicating that as k increases, ω—and consequently the frequency f—also increases. The acceleration of the system is directly related to the frequency, reinforcing that higher stiffness results in greater oscillation frequency. The discussion clarifies the connection between stiffness, frequency, and angular frequency, emphasizing their proportional relationship. Understanding these principles is essential for analyzing oscillatory motion in spring-mass systems.