BRAINCAKEWork Done and Energy
Work done is the force multiplied by the distance moved in the direction of the force, W = Fx. It is measured in joules, where 1 J = 1 N m.
Work done is energy transferred. When you push a crate along a floor at steady speed, the work done against friction is transferred to the surroundings as heat. When you lift an object at steady speed, the work done against gravity is stored as gravitational potential energy.
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Key terms in this lesson
- energy
- The capacity of a system to do work.
More in Work, Energy and Power
- Work Done at and Angle to Motion
- Principle of Conservation of Energy
- Forms of Energy
- Kinetic Energy
- Gravitational Potential Energy
- Energy Transfer
- Power
- Power and Motion
All 10 lessons in Work, Energy and Power · All OCR AS-level Physics topics