Definition of Work:
Work, in the context of physics, is defined as the measure of the energy transfer that occurs when an object is moved against an external force. It is the product of the force applied to an object and the distance over which the force is applied. Work is a scalar quantity, meaning it has magnitude but no direction.

Properties of Work:

1. Scalar Quantity: Work is a scalar quantity, which means it is completely described by its magnitude. The direction of the force and displacement do not affect the work done.

2. Depends on Force and Displacement: Work is directly proportional to both the magnitude of the force applied and the displacement of the object in the direction of the force. If the force or displacement is zero, no work is done.

3. Energy Transfer: When work is done on an object, energy is transferred to or from the object. If work is done on an object, its energy increases, and if work is done by an object, its energy decreases.

4. Units: The SI unit of work is the joule (J), which is defined as the work done when a force of one newton is applied over a distance of one meter. Other common units of work include the calorie and the foot-pound.

5. Positive and Negative Work: When a force acts in the same direction as the displacement, positive work is done. Conversely, when a force acts in the opposite direction to the displacement, negative work is done. Negative work represents energy being taken away from the object.

6. Work-Energy Principle: The work done on an object is equal to the change in its kinetic energy. This principle states that the net work done on an object is equal to the change in its kinetic energy. It forms the basis of understanding the relationship between work and energy.

7. Work-Energy Transfer: Work done on an object can be transformed into different forms of energy. For example, when work is done on an object by lifting it, the work is converted into potential energy. Similarly, work done against friction is converted into thermal energy.

In summary, work is the energy transfer that occurs when an object is moved against an external force. It depends on the magnitude of the force and the displacement of the object. Work is a scalar quantity and can be positive or negative. It is closely related to the concept of energy and is governed by the work-energy principle.

If work is said to be done it should follow 2 conditions they r 1.force must be applied 2.the body should be displaced