Forces in Balance | Physics

  • Created by: Tejal16
  • Created on: 06-10-19 15:24
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  • Forces in Balance
    • Vectors and Scalars
      • Scalars are quantities with only a magnitude (size). Vectors have both a magnitude (size) and a direction.
      • An arrow may represent a vector quantity. E.g. velocity, acceleration, force, displacement. The length of the arrow represents the magnitude, and the direction of the arrow the direction of the vector quantity.
    • Forces between Objects
      • Contact & non-contact forces
    • Resultant Forces
      • If the resultant force is zero the forces on the object are balanced. A resultant force is needed to change the velocity of an object. If the forces on an object are balanced then it will remain stationary, or, if it is moving, it will continue to move at a steady speed in the same direction.
      • Resultant force = mass  X acceleration
    • Center of Mass
      • How you find it
    • The Parallelogram of Forces
      • The two forces are represented by the adjacent sides of a parallelogram, the lengths of the sizes being proportional to the size of the forces. The resultant force is represented in size and direction by the diagonal of the parallelogram.
    • Resolution of Forces
      • Its the separation of a single force or motion into two or more which have different directions, and, taken together, are an equivalent for the single one; - the opposite of composition of a force.


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