这题b周期是不是应该改成0.4

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这题b周期是不是应该改成0.4
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这题b周期是不是应该改成0.4
这题b周期是不是应该改成0.4
 

这题b周期是不是应该改成0.4
是的,质点P的振动方程y=10sin(5πt)cm,则ω=5πrad/s,周期为:T=2π/ω =2π/5π =0.4s;故错误.

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