(1)求A球释放瞬间绝缘细线拉力的大小;
(2)求A、B两球刚要碰撞时A球的速度;
(3)求A、B两球碰撞前A球速度的最大值;
(4)A、B两球发生弹性碰撞瞬间,撤去原电场,同时加上垂直纸面向里的匀强电场,电场强度大小为。求球从离开桌面到落地过程位移的大小。
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2