一列在x轴上传播的简谐波,在x1=10cm 和x2=110cm处的两个质点的振动图

一列在x轴上传播的简谐波,在x1=10cm x2=110cm处的两个质点的振动图像如图所示,则波源的振动周期为  ▲  s这列简谐波的最大波长为  ▲   m

答案

【答案】4  4

【解析】

x-t图象得到质点振动的周期为4s,故波源的周期也为4s

t=0时刻,x1=10cm的质点在最大位移处,x2=110cm在平衡位置并且向上运动,两个平衡位置之间的距离为,故:,当n0时,波长最大,为4m

【考点】简谐运动的振动图象;简谐运动的振幅、周期和频率;波长、频率和波速的关系

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