A.弹簧a的弹力比弹簧b的弹力大 |
B.在上取△m粘在处,弹簧a长度变短,弹簧b长度变长 |
C.剪断弹簧a瞬间,质量为和的橡皮泥的加速度大小都为g,方向竖直向下 |
D.剪断弹簧b瞬间,质量为的橡皮泥加速度大小为3g,方向竖直向上,质量为的橡皮泥加速度大小为g,方向竖直向下 |
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