Examples of Energy Transfer (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards

Mechanical work, heating, electrical work, radiation

Force moves an object through a distance

Energy transferred from hotter to colder object

Energy cannot be created or destroyed, only transferred, stored, or dissipated

No energy can enter or leave

Maximum gravitational potential energy (GPE)

Maximum kinetic energy (KE)

Energy transferred to thermal, becomes less useful

Use lubricant (e.g., oil on fixed point)

All gravitational potential energy (GPE)

Kinetic energy (KE) is at maximum

KE zero, all energy is elastic potential energy (EPE)

Energy transferred from one store to another

$\text{Work (J)} = \text{Force (N)} \times \text{Distance (m)}$

Kinetic energy → thermal energy in brakes (friction)