Mindblown: a blog about philosophy.
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Heat Transfer Occurs By Three Mechanisms:
Conduction: It is the method in which the transfer of heat takes place between atoms and molecules in direct contact. Convection: It is the method in which the transfer of heat happens by the movement of the heated substance. Radiation: It is the method in which the transfer of heat takes place by electromagnetic waves.…
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What is Heat?
With the increase in the temperature of a body, the vibrations of molecules or atoms increase. These vibrations are then transferred from one part of the body to another. The measure of energy with which the molecules vibrate in a system is termed as heat stored in that object. As per the definition of heat, it is…
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Introduction
Classification According to heat definition, it is one of the essential forms of energy for the survival of life on earth. Transfer of heat takes place from one body to another due to difference in temperature as per thermodynamics. We use heat energy for various activities like cooking, ironing, transportation, recreation, etc. This form of energy also plays…
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Applications of Friction
Friction finds application when matchsticks are ignited. Motion of pistons in a cylinder is an application of friction. It is possible to write on books and board as there is friction between pen and the board.
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Types of Friction
What Causes Friction? Friction is caused due to the irregularities on the two surfaces in contact. So, when one object moves over the other, these irregularities on the surface get entangled, giving rise to friction. The more the roughness, the more irregularities and more significant will be the friction. Types of Friction There are four…
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Factors Affecting Friction
Friction is a force that is dependent on external factors. Following are the two factors on which friction depends: 1. On the nature of the two surfaces that are in contactFriction is dependent on the smoothness or roughness of the two surfaces that are in contact with each other. When the surface is smooth, the…
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What is Friction?
Friction is defined as the resistance offered by the surfaces that are in contact when they move past each other. Friction provides traction that is needed to walk without slipping. Friction is helpful in most cases. However, they also offer a great measure of opposition to the motion. In addition, about 20 per cent of…
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Introduction
Friction When we throw a ball on the floor, it starts moving with some velocity. But ideally, no force should be acting in the direction of motion, and according to Newton’s first law, the ball should keep rolling, but this does not happen. Instead, the ball stops after moving a certain distance, so a force…
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SI Unit of Force
The Force can be measured using a spring balance. The SI unit of force is Newton(N). Common symbols: F→, F SI unit: Newton In SI base units: kg·m/s2 Other units: dyne, poundal, pound-force, kip, kilo pond Derivations from other quantities: F = m a Dimension: LMT-2
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Pressure
The force, applied on a unit area of a surface is known as pressure Pressure=force/areaonwhichitactsPressure=force/areaonwhichitacts. If the area is smaller, then the pressure on a surface would be greater; e.g. this is the reason that the area of one end of a nail is pointed toexertsufficientpressuretoexertsufficientpressure and other end is bigger asshownintheimagegivenbelowasshownintheimagegivenbelow. This envelop of air is known as the atmosphere that…
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