Contact & Non-Contact Forces (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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Definition of a force
Definition of a force
A push or pull on an object due to interaction with another object
Properties of all forces
Properties of all forces
Magnitude and direction (vector quantity)
Unit of measurement for force
Unit of measurement for force
Newtons
Contact forces definition
Contact forces definition
Forces where two objects are physically touching
Non-contact forces definition
Non-contact forces definition
Forces where two objects are physically separated
Condition for normal contact force
Condition for normal contact force
Two objects must be in direct contact
Direction of normal contact force relative to contact
Direction of normal contact force relative to contact
Opposite direction, normal to planes of contact
Direction of air resistance on falling skydiver
Direction of air resistance on falling skydiver
Upwards
Effect of gravitational force
Effect of gravitational force
Attracts all objects to other objects
Electrostatic force between opposite charges
Electrostatic force between opposite charges
Attraction
Electrostatic force between same charges
Electrostatic force between same charges
Repulsion
What is magnetic force?
What is magnetic force?
Force experienced by certain objects in a magnetic field
Cause of friction
Cause of friction
Surfaces and their roughness when moved in contact