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Work Definition & Meaning

Click on the arrows to change the translation direction. The work reported in this paper represents the first part of a two part research project. Analysts refer to various sources of information to help them make investment decisions in their day-to-day work. Many pensioners will have to consider part-time work to supplement their retirement plans. She joined the company as a sales rep but worked her way up to managing director.

It is evident that the higher the magnitude of force, the higher the work gets done and vice-versa. Q.1. A girl pushes a pencil box by applying a force of \(20\;.\) Find the work done by this force as the pencil box is displaced through \(25\;\) along the path. Work is said to be done when the force acts on an object, which displaces it in the direction of the force. Now, let us push the wall with all our might. But the wall does not move or undergo any displacement. So, according to Physics, we have not done any work on the wall as there is no displacement in the wall.

Displacement, on the other hand, is the shortest distance between the initial position and the final position of the body in motion. A treatise on the analytical dynamics of particles and rigid bodies. Rolling resistance and air drag will slow the vehicle down so the actual distance will be greater than if these forces are neglected.

If you say 'I work in London', this suggests that London is your permanent place of work. You can use as with work to say what a person's job is. People who work have a job which they are paid to do. (Fifty-two Sundays a year … for three hours my mother was) unemployed in her own house. Like a queen —Philip RothRoth’s comparison of a mother to an unemployed queen comes from his novel, The Ghost Writer. The practice or advocacy of working as a volunteer, often with the hope of thereby gaining paid employment in the same field.

The synonyms grind and work are sometimes interchangeable, but grind implies labor exhausting to mind or body. ˈworking-party, ˈwork-party nouns a group of people gathered together to perform a particular physical task. Work, labor, travail, toil, drudgery, grind mean activity involving effort or exertion.

Constraints define the direction of movement of the particle by ensuring there is no component of velocity in the direction of the constraint force. This also means the constraint forces do not add to the instantaneous power. The time integral of this scalar equation yields Work from the instantaneous power, and kinetic energy from the scalar product of velocity and acceleration. The fact that the work–energy principle eliminates the constraint forces underlies Lagrangian mechanics. In particle dynamics, a formula equating work applied to a system to its change in kinetic energy is obtained as a first integral of Newton's second law of motion. It is useful to notice that the resultant force used in Newton's laws can be separated into forces that are applied to the particle and forces imposed by constraints on the movement of the particle.

Remarkably, the work of a constraint force is zero, therefore only the work of the applied forces need be considered in the work–energy principle. For moving objects, the quantity of work/time is integrated along the trajectory of the point of application of the force. Thus, at any instant, the rate of the work done by a force (measured in joules/second, or watts) is the scalar product of the force , and the velocity vector of the point of application. This scalar product of force and velocity is known as instantaneous power. In physics, work is the energy transferred to or from an object via the application of force along a displacement.