Work in physics is defined as the exertion of a force over a distance. In other words, it is the amount of energy required to move an object against a force.
The SI unit for measuring work is the joule (J). One joule is equivalent to the work done by a force of one newton over a distance of one meter.
Work is calculated by multiplying the force applied to an object by the distance the object moves in the direction of the force. The formula for work is W = F * d, where W is work, F is force, and d is distance.
In an experiment, work can be measured by using a force sensor to measure the force applied to an object, and a motion sensor to measure the distance the object moves. These measurements can then be used to calculate the work done on the object.
Some real-life examples of work being measured in joules include lifting a book off a table, pushing a shopping cart, and throwing a ball. In each of these situations, a force is applied to an object and it moves a certain distance, resulting in work being done in joules.