Mechanical Properties of Fluids Physics - Mechanical Properties of Fluids

Define angle of contract

State the formula for critical velocity in terms of Reynold's number for a flow of a fluid.

A rod of length \(4 cm\) is movable on a rectangular frame of wire. A film is formed in the frame. A force of \(3.2 \times 10^{-3} N\) is applied to the rod for its equilibrium. Find the surface tension of the liquid.

What is capillarity? State any two uses of capillarity.

Compare the amount of work done in blowing two soap bubbles of radii in the ratio \(4: 5\).

Draw a neat labelled diagram showing forces acting on the meniscus of water in a capillary tube.

A raindrop of diameter \(4 mm\) is about to fall on the ground. Calculate the pressure inside the raindrop.Surface tension of water \(T=0.072 N / m\), atmospheric pressure \(=1.013 \times 10^5 N / m ^2\) ]

Water rises to a height \(3.2 cm\) in a glass capillary tube. Find the height to which the same water will rise in another glass capillary having half area of cross section.

Explain surface tension on the basis of molecular theory.

Derive an expression for terminal velocity of a spherical object falling under gravity through a viscous medium

Obtain an expression for the rise of a liquid in a capillary tube.

The total energy of free surface of a liquid drop is \(2 \pi\) times the surface tension of the liquid. What is the diameter of the drop? (Assume all terms in SI unit).

On the basis of molecular theory explain the phenomenon of surface tension