FISICA
2. Newton’s Forces, Laws and Law of Universal Gravitation
2.1 Factors that change the structure or state of movement of objects
Factors that change the structure or state of movement of objects:
- Contact force: is the force of friction that is generated when a mobile body collides with a
static body or at rest arising a movement in this second body.
- Force at a distance: It is that force that arises through repulsion or attraction that generates
a body moving towards another body that is located at rest, which generates movement in this
second body.
For example, electrical charges of the same sign are repelled by making the resting body
move.
- Active forces: are those forces of action that are within a body in motion or at rest, which act
to carry out a displacement.
- Reactive forces: Those reaction forces that act within a body when receiving an external
force contrary to its movement or state of rest.
2.2 The concept of force
In physics, force is a physical magnitude that measures the intensity of linear momentum
exchange between two particles or particle systems. According to a classical definition, force is
any agent capable of modifying the amount of movement or shape of material bodies.
All forces are represented by vector magnitudes, which are represented by an arrow in the
Cartesian plane and to obtain the components it is necessary to know the following:
- Direction of force: Straight in which it moves, this can be east or west and/or the angle it
forms with a horizontal x.
- Sense of force: Where it is going (up, down, left and right); is represented by the tip of the
arrow.
- Displacement magnitude: The scale measure chosen for the representation in the plane.
- Starting point of the force: Place where the displacement begins.
2. Newton’s Forces, Laws and Law of Universal Gravitation
2.1 Factors that change the structure or state of movement of objects
Factors that change the structure or state of movement of objects:
- Contact force: is the force of friction that is generated when a mobile body collides with a
static body or at rest arising a movement in this second body.
- Force at a distance: It is that force that arises through repulsion or attraction that generates
a body moving towards another body that is located at rest, which generates movement in this
second body.
For example, electrical charges of the same sign are repelled by making the resting body
move.
- Active forces: are those forces of action that are within a body in motion or at rest, which act
to carry out a displacement.
- Reactive forces: Those reaction forces that act within a body when receiving an external
force contrary to its movement or state of rest.
2.2 The concept of force
In physics, force is a physical magnitude that measures the intensity of linear momentum
exchange between two particles or particle systems. According to a classical definition, force is
any agent capable of modifying the amount of movement or shape of material bodies.
All forces are represented by vector magnitudes, which are represented by an arrow in the
Cartesian plane and to obtain the components it is necessary to know the following:
- Direction of force: Straight in which it moves, this can be east or west and/or the angle it
forms with a horizontal x.
- Sense of force: Where it is going (up, down, left and right); is represented by the tip of the
arrow.
- Displacement magnitude: The scale measure chosen for the representation in the plane.
- Starting point of the force: Place where the displacement begins.
