![]() Potential energy can be stored in an object by compressing them, stretching them, bending them. For example potential energy of food is converted into electrochemical energy to operate our body system. Potential Energy: The energy possessed by body with principles of its position.Water mills works on the kinetic energy of the water. Ships sail using the kinetic energy of the wind. Wind mills work on the kinetic energy of the air. Kinetic energy: The energy possessed by the body by the virtue of it’s motion is called the kinetic energy.Īlso we can say that the kinetic energy of a body is equal to one-half product of body mass along with square of its velocity.Įxample of kinetic energy: A bullet fired from a gun can hit the target on account of the kinetic energy of the bullet.Let discuss the two forms of mechanical energy: ![]() Mechanical Energy: The energy produced by mechanical means is called mechanical energy. Kinetic and Potential Energy Difference.Total quantity of the energy in the universe exists is constant.Įnergy has several forms: mechanical energy, sound energy, heat energy, thermal energy, light energy, nuclear energy, chemical energy, solar energy, magnetic energy etc.Some energy transfers or energy transformations can be seen, heard, or felt.Energy can be stored and transferred from one form to another form.Energy can neither be created nor be destroyed it always remains conserved. ![]() The entire masses/matter possesses energy.So, work done is zero.Įnergy: Definition, Dimension, Unit and Formula.Įnergy Definition Physics: Energy of a body is defined as its capacity or ability to do work.Įnergy Equation: Change in K.E. For example: The work done in pushing an immovable wall is zero, because displacement of the wall is zero. Zero work: When the body gets displaced along a direction perpendicular to the direction of applied force then, the work done on an object is said to be zero work.For example: when we apply brakes to a moving bicycle the work done by the brake is negative because the braking force and the displacement act in opposite directions. Negative work: When the applied force and the displacement are in the opposite directions then, the work done on the body is said to be negative work.For example: when a horse pulls the cart, the cart is displaced in the direction of force applied. Positive work: When force(applied) along with displacement which are in the same directions then, the work done on the object is said to be positive work.Work done, is a scalar quantity and its magnitude may be positive, negative or zero. Where, F is component of the force and d is magnitude of displacement. SI unit of work or work done unit or Work units: The SI unit of work is Joule (J).Įxamples of work done: a man climbs up the hill, a horse pulls a cart an engine pulls a train etc. The object should move in the direction of force. This work is said to be done on a body if it satisfied the below two conditions:Ģ. ![]() Work Definition: Work is said to be done when the force acting on the body and the body moves through some distance in the direction of force. Work: Definition, SI unit, Example and What is the formula for work?
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