已知一质点作简谐振动振动方程为=Asin (omega t+dfrac (pi )(3))则其初相位为=Asin (omega t+dfrac (pi )(3))A.对 B.错

一质点同时参与同方向的简谐振动，它们的振动方程分别为_(1)=0.1cos (omega t+dfrac (pi )(4)), _(1)=0.1cos (ome

[题目]一物体作简谐振动,振动方程为-|||-=Acos (omega t+dfrac (1)(2)pi ) 则该物体在 t=0 时刻的动能-|||-与 =df

(较易) 已知有两个简谐振动其表达式分别为:则位移的相位比的相位____。_(1)=Acos (omega t+dfrac (pi )(2));(x)_(2)=

1 单选 已知两个同方向的简谐振动_(1)=2cos (1001pi t+dfrac (pi )(3)) __， _(1)=2cos (1001pi t+df

已知一质点作简谐振动振动方程为=0.02cos (50pi t-dfrac (pi )(3)),则该质点在t=2s时的速度v=( )=0.02cos (5

两简谐振动的振动方程分别为_(1)=3cos (2pi t-dfrac (pi )(3)), _(2)=4cos (2pi t+dfrac (pi )(6))单

已知某质点作简谐振动，其振动方程为=0.6cos (5pi t+0.8pi ),则初相位等于___=0.6cos (5pi t+0.8pi )。已知某质点作简谐

[题目]2、一质点作简谐振动,振动方程为-|||-=6cos (8pi t+dfrac (pi )(5))cm, 则 t=2 秒时的相位为 __ 质-|||-点

某质点参与_(1)=10cos (pi t-dfrac (pi )(2))cm 及 _(2)=20cos (pi t+dfrac (pi )(2))cm两个同方

已知一质点作简谐振动,振动方程为 x=0.02-|||-cos (50pi t-dfrac (pi )(3)), 则该质点在 t=2s 时的加速度约-|||-为