(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.
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Wear and tear of machinery parts
Nature of the surfaces
When one surface slides over another then it opposes the motion of the body then it is known as friction.
Due to irregularities
When one surface rolls over another surface is known as rolling friction.
Static friction
Rolling friction
When one surface slides or moves over another sliding or kinetic friction.
Fluid friction
Friction offered by fluid due to liquid and gases.
Liquid and gases collectively called as a fluid.
To decrease friction.
Sliding friction
Contact force
Independent of area of contact surfaces
Friction
Kinetic friction
When one surface is in rest over another is known as static friction.
