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first understand ‘mechanics’. Mechanics is a physical science which deals with the bodies which are either moving or stationary, under the influence of some external force. Mechanics can be further divided into two parts Statics Dynamics Statics deals with the bodies fluid (sometimes also slurry) from one place to another. One of the examples of a pump is the water pump which is used in our houses to What is surface tension? Surface tension (or ST) is a property of fluid which is responsible for the formation of enclosed surfaces. For example, Mercury droplets are near spherical (and can also be rolled very easily) and water drops hanging from a tree branch are also near Types of fluid flow On the basis of different flow conditions, fluid flow can be clas*ified into various types. Viscous and inviscid flow One the basis of viscosity of fluid (in flow) we can clas*ify fluid flows into two types. Viscous Inviscid (Non-Viscous) In viscous flow, What is a fluid? Matter around us exists in three phases (excluding plasma) Solid Liquid Gas From the above three phases liquid and gas are combinedly known as fluids. The main difference between fluids and solid lies in their ability to resist shear stresses. When a constant What is a chain drive? Before understanding chain drive, let us first understand ‘What is a Chain?’. A chain can be defined as a series of links connected by pin joints. Now we can move on to chain drive. A chain drive consists of an endless chain wrapped around two sprockets. What is a Brake? Brake (or Brakes) is a Mechanical device which absorbs kinetic energy of moving systems and brings them to rest. This absorbed kinetic energy is converted into heat and then dissipated to the environment. One of the well-known examples of brakes is in What is a Clutch? A clutch is a mechanical device which is used to connect (or disconnect) two rotating shafts on the will of operator. One of the most prominent application of clutch is in modern automobiles. Many times, it has been found that people confuse between