Contact & Non-Contact Forces (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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Practise the cards
14 cards from this deck
What is a force?
What is a force?
A push or pull on an object due to interaction with another object
Force properties
Force properties
Magnitude & direction (vector quantity)
Force is measured in...
Force is measured in...
Newtons
Contact forces
Contact forces
Forces where objects are physically touching
Non-contact forces
Non-contact forces
Forces where objects are physically separated
Examples of contact forces
Examples of contact forces
Tension, friction, air resistance, normal contact force
Air resistance direction on skydiver
Air resistance direction on skydiver
Upwards
Normal contact force requirement
Normal contact force requirement
Two objects in direct contact
What does gravitational force do?
What does gravitational force do?
Attracts all objects to other objects
Electrostatic force: opposite charges
Electrostatic force: opposite charges
Attraction
Electrostatic force: same charges
Electrostatic force: same charges
Repulsion
Magnetic force
Magnetic force
Force on certain objects in a magnetic field
Normal contact force direction
Normal contact force direction
Opposite to contact & normal to contact planes
Cause of friction
Cause of friction
Surfaces & roughness when moved in contact