(1)当木块A对容器底部的压力刚好为0时,A受到的浮力;
(2)木块A的密度;
(3)若继续缓慢向容器中加水,当容器中的水的总质量为时,停止加水,如图丙所示。此时将与A相连的细绳剪断,已知细绳剪断前后木块静止时,水对容器底部压强的变化量为。求细绳的长度。(整个过程中无水溢出,细绳不可伸长)
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