Work

Things to remember

• Work done by force acting on a body is defined as the product of force and displacement of the body in the direction of the force.
• The unit of work is newton-metre (Nm), which is Joule (J).
• One joule of work is said to be done when one Newton force displaces a body through one metre in its own direction.
• When a body moves in the direction of force applied then Work done (W) = Force (F) × Displacement (d).
• When a body moves oblique to the direction of force applied then Work done (W) = Force (F) CosÆŸ. Distance (D)