[单选题]
95.18: The period of a spring-mass - g7ycefuf1/zt(c t w+system undergoino) cktysta3wqx 0p91-) b7hmb; a(ivjg simple harmonic motion is T. If the amplitude of the spring-mass system’s motion is d k s)mvtxia(p bw7;31h t9)qjbyoa0-coubled, the period will be: