Mosquitoes sitting on the water In rainy reason, diseases like dengue and malaria spread by mosquito breeding on fresh stagnant water. They do not sink in water because of surface tension. At the points wherever the legs of the mosquito touch the liquid surface, the surface becomes concave due to the weight of the mosquito. … Read more
One common manifestation of surface tension is the difference in pressure it causes across a curved surface. For simplicity, we consider first a liquid surface that is curved in only one plane but is flat in a direction perpendicular to that plane. The pressures in the different fluids on either side of this interface are … Read more
The viscosity of usually cited as the thickness of a fluid. You’ll think of water (low viscosity) and honey (high viscosity). At a molecular level, viscosity is a result of the interaction between the various molecules in a fluid. This can be additionally understood as friction between the molecules within the fluid. How can we … Read more
Isaac Newton is the founder of the universal law of gravitation and this law of Newton states that every particle attracts every particle in the universe with a force that is directly proportional to the product of their masses and that is also inversely proportional to the square of the distance between their centers. Newton … Read more
Terminal velocity is the most velocity attainable by an object because it falls through a fluid (air is the commonest example). This usually happens or occurs when the total of the sum of the drag force (Fd) and also the buoyancy is equal or the same with the downward force of gravity (FG) acting on … Read more
The relationship between the strain and stress that is displayed by the particular material is known as the stress-strain relationship of that material. For each material, this relationship is unique and is determined by recording the amount of strain or deformation at distinct intervals of the multiple kinds of loadings or stress. Uses of Stress-Strain … Read more
Streamline the flow of a liquid is that flow during which every component of the liquid passing through a point travels on a similar path and with the same speed because the preceding component passes through that point. A streamline is also defined as the path, straight or curving, the tangent to which at any … Read more
Stoke’s law is the basis of the falling-sphere measuring instrument, in which the fluid is stationary in a very vertical glass tube. A sphere of well-known size and density is allowed to go up through the liquid. If properly selected, it reaches velocity, which may be measured by the time it takes to pass two … Read more
Pascal’s law and its applications (hydraulic lift and hydraulic brakes) Pascal’s Law states that the pressure applied to a fluid in a much-closed container is transmitted equally to all or any points within the fluid and act in all directions of the container. Pascal’s Law is applicable to both solids and liquids. The law was … Read more
Hooke’s law is the law of elasticity which was discovered in 1660 by the English scientist, Robert Hook. This law is compatible with Newton’s law of the static equilibrium. This law states that for the relatively small deformations of the objects, the size of deformation or displacement is directly proportional to the force or load, … Read more