The SI unit of work done is

The SI unit for measuring work done is the joule (J). Work is defined as the energy transferred to or from an object when a force is applied to it, causing displacement. The joule is named after the physicist James Prescott Joule, who made significant contributions to the study of energy.

One joule is equivalent to the work done when a force of one newton moves an object one meter in the direction of the force. Mathematically, it is expressed as:
Work (W) = Force (F) × Displacement (d) × cos(θ),
where θ is the angle between the force and displacement.

The joule is a derived unit in the International System of Units and is widely used in physics to quantify energy, heat, and work in various applications. For example, lifting a 1-kilogram object by 1 meter against the force of gravity requires approximately 9.8 joules of work.