Secques

• Magnitude


  Refers to the size or strength of the force. Commonly expressed in Newton (N), Dyne (dyn), or pounds (lbs)
• Direction


  Points to where the object goes. The direction of the arrowhead indicates the direction of the force. The length of the arrow represents the amount of force (relative magnitude)
• Point of application


  The location of where the force is applied
• Line of action


  The straight line passing through the point of application and parallel to the direction of force
• Types of force


  • Contact forces
  • Non-contact forces
• Contact forces


  • Forces where objects touch or contact with each other
• Contact forces


  • Applied
  • Friction
  • Normal
  • Tension
• Applied force


  A force given to a person or object by another person or object
• Friction is the force acting against or opposite an object in contact with which makes the movement of the object slow down. Friction always opposes the motion of an object
• Normal force


  The force that acts perpendicular to the surface of the object in contact with
• Tension


  The force applied to string, rope, chain or cable
• Non-contact forces


  • Forces where objects do not touch or contact with each other. These forces act over a zone or area called field
• Non-contact forces


  • Gravitational
  • Magnetic
• Gravitational force


  The force of attraction between two objects. Bigger masses and closer distances result in greater gravitational force
• Weight


  An example of the gravitational force of the Earth towards an object
• The weight of an object depends on the mass of the celestial body where the object is attracted to
• Magnetic force


  Forces exerted on a field of attraction or repulsion as in the case of magnets and other magnetic materials
• Balanced forces


  Forces that are equal in magnitude but opposite in direction. Balanced forces do not cause a change in motion
• Unbalanced forces


  Forces that cause a change in the motion of an object. Unbalanced forces are not equal and in opposite direction
• Net or resultant force


  The sum of all forces acting on an object
• When an object is at rest, a zero net force would make the object remains at rest. When the object is moving, a zero net force would make the object maintain its velocity at a given time interval
• When the net force is not zero, the object's velocity will change. A net force exerted to an object at rest may cause the object to move. In a moving object, a net force will increase its velocity when the force is in the same direction of its motion. If the net force is in the opposite direction of the object's motion, the force will reduce the object's velocity. When the net force acts sideways on a moving object, the direction of the object's velocity changes