A cylindrical body of cross - sectional area A, height $$H$$ and density $${\rho _s},$$ is immersed to a depth $$h$$ in a liquid of density $$\rho ,$$ and tied to the bottom with a string. The tension in the string is

A static fluid can have

A mercury manometer is used to measure the static pressure at a point in a water pipe as shown in Fig. The level difference of mercury in the two limbs is $$10$$ $$mm.$$ The gauge pressure at that point is

Bodies in floatation to be in stable equilibrium the necessary and sufficient condition is that the center of gravity is located below the _____________