(3)简谐振动过程中,动能和势能相等的位置的位移等于 () 。-|||-(A) pm dfrac (A)(4) (B) pm dfrac (A)(2) (C) pm dfrac (sqrt {3)A}(2) (D) pm dfrac (sqrt {2)A}(2)

2.一谐振子作振幅为A的简谐振动,它的动能与势能-|||-相等时,它的坐标为:-|||-A .pm dfrac (1)(2)A .-|||-B .pm dfra

) ( )-|||-(A) =pm (2k+1) (B) =pm 2k-|||-(C) =pm dfrac (1)(2)(2k+1) (D) =pm dfrac

. . .-|||-.-dfrac (2)(3)pi +2kpi ,k=0.pm 1 . . . .-|||-(C) dfrac (1)(3)pi +2kpi

A、 dfrac (pi )(6) B、 dfrac (2pi )(3) C、 dfrac (4pi )(3) D、 dfrac (pi )(3)-|||-2、

一弹簧振子简谐振动系统,振幅为A,振动过程中位移等于( )时,其动能和势能相 、等。6. 一弹簧振子简谐振动系统,振幅为A,振动过程中位移等于( )时,

pm dfrac (3)(5)是_________的平方根是_________的平方根

2.求曲线 ^dfrac (2{3)}+(y)^dfrac (2{3)}=(a)^dfrac (2{3)} 在点 (dfrac (sqrt {2)}(4)a,d

2.求曲线 ^dfrac (2{3)}+(y)^dfrac (2{3)}=(a)^dfrac (2{3)} 在点 (dfrac (sqrt {2)}(4)a,d

[题目]-|||-求曲线 ^dfrac (2{3)}+(y)^dfrac (2{3)}=(a)^dfrac (2{3)} 在点 (dfrac (sqrt {2)

dfrac (1)(2)-|||-C .dfrac (sqrt {2)}(2)-|||-D .dfrac (sqrt {3)}(2)