An ideal mass–spring system has period T0. Four separate modifications are made to the original system, one for each experiment listed below.
I. Mass doubled, spring constant unchanged
II. Spring constant halved, mass unchanged
III. Amplitude tripled, mass and spring constant unchanged
IV. Mass doubled and spring constant halved
Which experiment results in the greatest period of oscillation?
a) I only
b) II only
c) IV only
d) III only