Learn the work formula in Physics, which is the product of force and displacement. Find out how to calculate work done by a constant force and its SI unit, Joule. See examples and solutions with Vedantu. Work Equation Mathematically, work can be expressed by the following equation. W = F • d • cos Θ where F is the force, d is the displacement, and the angle (theta) is defined as the angle between the force and the displacement vector. Perhaps the most difficult aspect of the above equation is the angle "theta." The angle is not just any 'ole angle, but rather a very specific angle. The angle measure is defined as the angle between the force and the displacement. To gather an idea of it ... Welcome to the work calculator , where you can learn the work formula and how to calculate work . For physicists, work is a very different concept than in normal life; there's even a work equation! Come in to read about the work definition and the SI units for work . It might seem complicated, but I promise it won't be much " work ." If you came here to calculate work done by gases, then our combined gas law calculator is the tool you are looking for. Work is the energy transferred by a force along a displacement. Learn how work is calculated, measured and understood in physics, with examples and historical background.