Please enable JavaScript.
Coggle requires JavaScript to display documents.
Friction the necessary evil (Helps to light a match stick (Helps us to run…
Friction the necessary evil
Sliding a slide
Helps us to write and erase
Helps to light a match stick
Helps us to run and walk
Climbing a mountain
Prevent tyres from slipping
Friction the necessary evil
Sliding on slides
Walking on road
Helps us to right and erase
Running on road
Makes it difficult to move
big and heavy objects
Produces unwanted heat resulting
wastage of energy
Causes wear and tear due to rubbing
Produces a lot of noise pollution
Helps our shoes to stand stable
Produces notice pollution
Causes wear and tear
Makes it difficult to move big and heavy objects