Forces Mind Map

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  • Vectors and Scalars
    • Forces
      • Contact and Non-Contact forces and resultant forces
        • A Non-Contact force is a force which acts performs on a object without physically coming in contact with it
          • Examples
            • Magnetic
            • Electric
            • Gravitational
        • A Contact force is a force that requires contact to occur
          • Examples
            • Applied force
            • Spring force
            • Drag force
            • Frictional Force
            • Normal Force
        • A resultant force can be found by adding up the individual forces
      • Work Done
        • When a force causes a body to move, work is being done by the force
        • Work is the measure of energy transfer when a force moves an object through a distance
        • When work is done, energy has been transferred from one energy store to another
        • energy transferred = work done
      • Parallelogram and resolution of forces
        • To find the resultant of two forces, you can use the parallelogram of force vectors as the sides, then the diagonal will be equal to the resultant force
        • The parallelogram of forces is a method for solving the results of applying two forces to an object
        • 1) Consider the horizontal and vertical directions separately
        • 2) State the size and direction of the resultant force
      • Gravity and Centre of Mass
        • Gravitational Force is the force of attraction between masses
        • Gravity affects all masses, but you only notice it when one of the masses is really big
        • TWO IMPORTANT EFFECTS
          • 1) On the surface of a planet, it makes all things fall towards the ground
          • 2) It gives everything a weight
      • Forces and Elasticity
        • Forces are responsible for changing the motion of objects.
        • Elasticity is the ability of an object or material to resume its normal shape after being stretched or compressed
      • f = e x k
      • j = 0.5 x k2
    • A vector is a line with a direction and value whereas a scalar only has a magnitude.
    • Example of Vectors
      • Displacement
      • Velocity
      • Acceleration
      • Force
      • Weight
      • Friction
      • Momentum
    • Example of Scalars
      • Mass
      • Length
      • Distance
      • Speed
      • Power
      • Energy
      • Work

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