一质点沿着x轴作简谐振动,震动函数为x=0.05cos(2πt+1⼀3π),从t=0起到质点位置在x

x=-2.5cm处,且向x轴正方向运动的最短时间
2025-06-26 21:37:58
推荐回答(2个)
回答1:

x=0.05cos(2πt+1/3π)是x=0.05cos(2πt+π/3) m 吧?
-0.025=0.05cos(2πt+π/3),,则 cos(2πt+π/3)=-0.5 .,则2πt+π/3=2π/3 ,解得 t=1/6 (s)

回答2:

x=0.05cos(2πt+1/3π)是x=0.05cos(2πt+π/3) m 吧?
-0.025=0.05cos(2πt+π/3),,则 cos(2πt+π/3)=-0.5 .,则2πt+π/3=2π/3 ,解得 t=1/6 (s) 。