Find Work done by a series of forces on a mass (Class 11 physics | IIT JEE)
Channel: The Science Cube
Date: 2017-11-04

A force is a push or a pull that can cause an object to change its velocity. When a force is applied to an object, it can cause the object to accelerate, change direction, or change shape.

One of the most common examples of the work done by a force is when a person lifts a heavy object. In this case, the person applies a force to the object, causing it to move upward. The work done by the force is equal to the force multiplied by the distance over which the force is applied.

Another example of the work done by a force is when a car accelerates from a stop. In this case, the force of the engine pushing against the ground causes the car to accelerate. The work done by the force is equal to the force multiplied by the distance over which the force is applied.

In both of these examples, the work done by the force causes the object to change its velocity. This change in velocity is known as kinetic energy, and it is a measure of the object's ability to do work.

In general, the work done by a force is a measure of the energy transferred from one object to another. This energy can be used to perform a variety of tasks, such as lifting objects, moving objects, or generating heat. The work done by a force is an important concept in physics and engineering, and it is used to understand the behavior of objects and systems under various conditions.

Work = Force x Displacement

This equation states that the work done by a constant force is equal to the magnitude of the force multiplied by the displacement of the object over which the force is applied.

Additionally, there is the equation for the work done by a variable force:

Work = Integral (Force(x) x dx)

This equation states that the work done by a variable force is equal to the integral of the force with respect to distance. This equation is used to calculate the work done by a force that changes over the course of the motion of an object.