Two blocks of equal mass are each attached to separate vertical ideal springs and are set into small–amplitude oscillations. Block C oscillates with a period of 0.60s, while block D oscillates with a period of 0.80s. Which of the following most accurately compares the stiffness constants kC and kD of the two springs?
(a) kC<kD because the spring with the longer period must be stiffer to reverse the block’s motion.
(b) kC>kD because the spring with the shorter oscillation period is stiffer.
(c) kC=kD since both blocks have the same mass.
(d) kC=0.75kD because the student used k∝1/T instead of k∝1/T2.