Properties of Matter

If the level of liquid starts decreasing slowly when the level of liquid is at a height $h_1$ above the cylinder, the block just starts moving up. Then, the value of $h_1$ is:

If the height $h_2$ of water level is further decreased, then

A U-tube is rotated about one of its limbs with an angular velocity \(\omega\). Find the difference in height \(\mathrm{H}\) of the liquid (density \(\rho\) ) level, where the diameter of the tube is \(d < <\mathrm{L}\).