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)
[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
【题目】某质点参与 _(1)=5cos (pi t-dfrac (pi )(2))cm 及-|||-_(2)=5cos (pi t+dfrac (pi )(2)
10.-|||-两同方向同频率的简谐振动的振动方程为 _(1)=6cos (5t+dfrac (pi )(2)) (SI), _(2)=2cos (5t-dfr
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
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
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
6.5178:一质点沿x轴作简谐振动,振动方程为 =4times (10)^-2cos (2pi t+dfrac (1)(3)pi )(S1) t=-|||-0
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
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