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Forces

Forces. Chapter 5 Page 124-127. Force. Force is simply a push or a pull on an object All forces have size and direction A force can change the acceleration of an object Forces are represented by the unit called the Newton (N). Forces are around us and everywhere. Applied Force.

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Forces

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  1. Forces Chapter 5 Page 124-127

  2. Force • Force is simply a push or a pull on an object • All forces have size and direction • A force can change the acceleration of an object • Forces are represented by the unit called the Newton (N)

  3. Forces are around us and everywhere

  4. Applied Force • An applied force is a force which is applied to an object by a person or another object. If a person is pushing a desk across the room, then there is an applied force acting upon the object. The applied force is the force exerted on the desk by the person.

  5. Gravity Force • The force of gravity is the force at which the earth, moon, or other massively large object attracts another object towards itself. By definition, this is the weight of the object.

  6. Normal Force • The normal force is the support force exerted upon an object which is in contact with another stable object.

  7. Friction Force • The friction force opposes the motion of the object. As such, friction depends upon the nature of the two surfaces and upon the degree to which they are pressed together.

  8. Air Resistance Force • The air resistance is a special type of frictional force which acts upon objects as they travel through the air. Like all frictional forces, the force of air resistance always opposes the motion of the object.

  9. Tensional Force • The tension is the force which is transmitted through a string, rope, or wire when it is pulled tight by forces acting from each end. The tensional force is directed along the wire and pulls equally on the objects on either end of the wire.

  10. Spring Force • The spring force is the force exerted by a compressed or stretched spring upon any object which is attached to it.

  11. Net force • Is the combination all of the forces acting on an object.

  12. Balanced forces • When the forces on an object produce a net force of zero N.

  13. Unbalanced forces • When the net force on an object is not 0 N.

  14. Free Body Diagram

  15. Free Body Diagram Direction of force will be in N. Add or Subtract opposite forces. Can have them going diagonally.

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