(a) If we neglect the springs mass, is the experimental value k (based on the equation k = mg/yo = m2 ) less or bigger

(a) If we neglect the spring’s mass, is the experimental value k (based on the equation k = mg/yo = m·ω2 ) less or bigger than actual value of k?

(b) why equation g = yo·(2π/T)2 is a better approximation for a large mass m.