Definition Of Force Work And Power

We can calculate work by multiplying the force by the movement of the object.

Definition of force work and power. If the work done is and time is given by then the power is given by. Since the rate of change of displacement is the velocity we. A true force is alway. Since work done is given by where is the displacement we can write power as.

In the case of a constant force work is the scalar product of the force acting on an object and the displacement caused by that force. Work is the result of a force acting over a certain distance. But there is one other very important thing to understand about force. I work done by a force is positive when the displacement is in the direction of the force.

Force is the fundamental result of an interaction between two objects while power is an expression of energy consumed over time work of which force is an element. The concepts of force and power seem to convey similar meanings and are often confused for each other. Since w increases as x increases given a constant force the greater the distance during which that force acts on the particle the more work is done. Work is the product of the magnitudes of the force and the displacement and direction is not taken into account.

Though both force and displacement are vector quantities work has no direction due to the nature of a scalar product or dot product in vector mathematics. What is work energy and power. W f d. This distance is called the displacement of the object.

Power is the rate of doing work. Work of a force is the line integral of its scalar tangential component along the path of its application point. If the force f and the displacement d are in the same direction then the work w is. If the force varies e g.

We can also see from this equation that work is a scalar quantity rather than a vector one. State the condition when the work done by force is i positive and ii negative. Work is done whenever a force is used to move an object. Force and power can both be described and measured but a force is an actual.

Ii power is a scalar quantity. Work is done when a force is exerted on an object and the object moves from one place to another. I ll try to answer these a little bit differently. Work has a specific definition in physics.

In physics we can define energy as the capacity to do. But in physics they are not interchangeable. If the force is given by f x a function of x then the work done by the force along the x axis from a to b is. Work is said to be done when a force applied to an object moves that object.

The si unit of work is the joule j energy. In physics work is defined as a force causing the movement or displacement of an object. Force if you re a taking classical physics simply stated a force is a push or a pull of some sort. Ii work done by a force is negative when the displacement is in the direction opposite to the force.