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FORCE - Coggle Diagram

- - - - ways to reduce friction
        
        smooth surfaces
        
        ball bearing
        
        lubricants
        
        streamlined shape
      - friction is nuisance when
        
        makes movement difficult
        
        causes wear and tear
      - uses
        
        helps in walking and standing stably
        
        helps writing on paper
        
        allow us to light a match stick
      - definition:
        
        friction is the force that opposes the motion between two surfaces in contact
    - - definition
      - examples
  - - - gravitational force :
        
        definition: Force acting on a stretched or compressed elastic object to return it to its original space
        
        effects of gravitational force
        
        allows us to stand stably on the ground without floating
        
        responsible for the motion of planets in solar system
        
        gives object weight
        
        causes tides in the ocean
        
        keeps artificial satellites in their orbits
        
        difference between weight and mass:
        
        SI unit of mass is kg but SI unit of weight is N
        
        mass remains constant but weight changes with the change of location due to different gravitational force
        
        mass is measured with the use of beam balance but weight is measured with the use of spring balance
      - magnetic force
        
        uses: :
        
        separate magnetic and non magnetic materials
        
        separate metal pieces at the junkyard for recycling
        
        refrigerator door
        
        maglev train
        
        definition
        
        force extend between a magnet and another magnetic material like iron or steel