Newtonian Mechanics
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13 Terms
Force
A vector quantity, idicated by the arrow above the F. Push and pull. Both external and internal. Noted by N
Force Diagram
Free-body diagram. Represents the forces that objects in a systems exert on it. Represents the system by a dot. Arrows represent the forces. Shows the forces at a single instant.
Contact Forces
Arise due to an interaction where there is direct contact with one body with another.
Ex. Car crash
Non-contact Forces
Forces in which the bodies interacted without directly touching each other.
Ex. Gravitational forces
Gravity Force
Applied Force (Fapp)
Force that is exerted upon an object from another object.
Ex. Person pushing a desk, the applied force is applied by the person on the desk.
Normal Force (Fnorm)
Force that is the support upon an object that is in contact with another stable object.
Ex. A book sitting on a desk. The surface on the desk is exerting an upward force upon the book.
Friction Force (Ffrict)
Air Resistance (Fair)
Tension Force (Ftens)
Spring Force (Fspring)
Net Force
The vector sum of all the forces acting upon a body. Measured in Newtons (N).