Mechanical Properties of Fluids

A force is applied on a cube of side $3\mathrm{m}$, Another force, double the magnitude of the previous force is applied on a cube of $1\mathrm{m}$. What is the ratio of pressure on the first cube$\left(\mathrm{P}\right)$ To the pressure on the second cube $\left(\mathrm{p}\right)$?

When the area decreases-

Which among the following is an assumption of Hagen-Poiseuille equation?

Shear stress is caused due to

Describe the effect of nature of liquid and temperature on surface tension?

The _____ of a fluid is defined as the ratio of the shearing stress between adjacent layers of fluid to the rate of change of velocity perpendicular to the direction of motion.

The velocity of water in river is $18 \mathrm{k}\mathrm{m}\mathrm{ }{\mathrm{h}}^{-1}$ near the surface. If the river is $5\mathrm{ }\mathrm{m}$ deep, then the shearing stress between the surface layer and the bottom layer is (coefficient of viscosity of water, $\mathrm{\eta }={10}^{-3} \mathrm{P}\mathrm{a} \mathrm{s}$)

The shear stress of a fluid depends on:

How shear stress for fluids is different from solids?

An ideal fluid can not experience shearing stress.

Which one of given is not a property of the liquid?

Which one of the given option is not the property of the solid?

Which kind of force is cause of shear stress?

Two metal spheres of density$11\times {10}^3\mathrm{kg}/{\mathrm{m}}^3$  are falling through a liquid of density $2\times {10}^3\mathrm{kg}/{\mathrm{m}}^3$ with the same uniform speed. The ratio of their radii is :

A piece of copper having a rectangular cross-section of $15.2 \mathrm{mm} \mathrm{x} 19.1 \mathrm{mm}$ is pulled in tension with $44,500 \mathrm{N}$ force, producing only elastic deformation. Calculate the resulting strain? Shear modulus of elasticity of copper is $42 \mathrm{x} {10}^9 \mathrm{N} {\mathrm{m}}^{-2}$.

The Young's modulus of a perfectly rigid body is 

What do you mean by shear stress?

Which of the following is an example of fluid?

What are fluids? Mention some of their basic properties.

Cotyledons are also called-