本题目来源于试卷: Vibrations and Waves，类别为 IB物理学
[问答题]
A mass hanging from a spring 0iv2b2az y 0ohssg1pkbk:v (+rgd 67 vcan oscillate in tf,.bm)lj8: bc *oeg bmhe vertical direction or can swing as a pendulum of small amplitude, but not both at the same time. Which one is long)lbe8,gb o.m*:bf cmj er, the period of the vertical oscillations or the period of the horizontal swings, and by what amount? [Hint: Let $l_0$ be the length of the unstretched spring, and L be its length with the mass attached at rest.]
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