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force and pressure - Coggle Diagram
force and pressure
common Forces
weight (W=mg)
The gravitational force on an object.
Depends on mass (m) and gravitational field strength (g).
friction
oppose motion between surface in contact and depend on texturw of surface and normal force
Mass Vs Weight
Property: Mass: Weight
Definition
Amount of matter in an object
Gravitational force on an object
SI Unit
kilogram (kg)
Newton (N)
Type
Scalar
Vector
Measured with
Electronic/beam balance
Spring balance
Varies with location?
No — always constant
Yes — depends on g
what is it?
force is an interaction between 2 objects.
SI unit: newton (N)
non-contact (field) forces.-act at a distance
Weight (gravitational force)
Electrostatic force
Magnetic force
contact forces- need physical contact
Frictional force
Air resistance
Normal force
Tension
air resistance
oppose motion of objects through air( Depend on surface are and speed of the object)
normal force
act perpendicular to the surfaces in contact
Tension
act along a connector( pointing away from the object)
Type of forces
Pressure
density