Work is calculated by multiplying force by the distance over which the force is applied. In the specific case of calculating work in units of foot-pounds, the force must be measured in pounds-force and the distance in feet. For instance, lifting a 10-pound object a vertical distance of 3 feet requires 30 foot-pounds of work.
This measurement provides a standardized quantification of mechanical work performed, critical for understanding energy expenditure in various applications from simple machines to internal combustion engines. Historically, quantifying work was essential for advancements in engineering and physics, allowing for the development of more efficient systems and contributing to our understanding of energy itself. It allows comparison and evaluation of different mechanical systems, providing a basis for optimizing efficiency and power output.
