Forces
FORCE   An action exerted on an object which    may change the object’s state of rest,    its shape or motion is called f...
 The SI unit of force is the Newton and  it is denoted by N. 1 N = 1 kg.1 m/s2
Forces can act throughcontact or at a distance If you pull on a spring, the spring  stretches. If you pull on a wagon, th...
Force is a vector   Because the effect of a force depends    on both magnitude and direction, force    is a vector quanti...
Net Force   If more than one force acts    simultaneously on the same object, net    force is the one that determines mot...
Free-body diagram A free-body diagram is used to  analyze only the forces affecting the  motion of a single object. Free...
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Force high school

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Force high school

  1. 1. Forces
  2. 2. FORCE An action exerted on an object which may change the object’s state of rest, its shape or motion is called force.
  3. 3.  The SI unit of force is the Newton and it is denoted by N. 1 N = 1 kg.1 m/s2
  4. 4. Forces can act throughcontact or at a distance If you pull on a spring, the spring stretches. If you pull on a wagon, the wagon moves. When a football is caught, its motion is stopped. These pushes and pulls are examples of contact forces. Another class of force is called field force that does not involve physical contact between two objects.
  5. 5. Force is a vector Because the effect of a force depends on both magnitude and direction, force is a vector quantity.
  6. 6. Net Force If more than one force acts simultaneously on the same object, net force is the one that determines motion of the object.
  7. 7. Free-body diagram A free-body diagram is used to analyze only the forces affecting the motion of a single object. Free-body diagrams are constructed and analyzed just like other vector diagrams.

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