Two ideal mass-spring systems, X and Y, oscillate on identical frictionless surfaces. The masses are the same, but the amplitudes differ: AX=0.040m and AY=0.060m. At every instant, the total mechanical energy of system X is one-half that of system Y. Which of the following is the best estimate of the ratio kX/kY of their spring constants?
a) 0.75
b) 2.3
c) 1.1
d) 0.89