本题目来源于试卷: gc textbook chapter 11 Vibrations and Waves，类别为 IB物理学
[问答题]
Give some examples of everyday vibrating objects. Which exhibit 5eus8gcd8 7w mz t0ch,rxm7e 0SHM, atv3*g mem r1kz4la98ae least approximat3g4rlama 8ev kz9m1e*ely?
参考答案: The blades in an electric shaver vibrate, approximately in SHM. The speakers in a stereo system vibrate, but usually in a very complicated way since many notes are being sounded at the same time. A piano string vibrates when struck, in approximately SHM. The pistons in a car engine oscillate, in approximately SHM. The free end of a diving board oscillates after a diver jumps, in approximately SHM.
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