Write 5 examples of pressure in our daily life
Answers
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There were lots of pressure in our daily life :-
1. IN SCHOOLS :- there is a very heavy bag . They r having wider straps so that pressure is exerted on the shoulder is less.
2. Through breathing.
3. Aircraft fly because of the air pressure on the wings.
4. Toy balloon inflates because of air pressure inside
5. Bullet fired from a gun is driven by gas pressure .
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Answer:
The wheels of the battle tank move on a belt of steel to decrease pressure exerted by the tank on the ground.
Knives are ground to a thin edge .This decreases the area and hence will increase the pressure when a force on it.
The tip of needle is made sharp so that the force applied on it acts on a small area .This increases the pressure on it and hence it can easily pierce the cloth .
Wooden or concrete sleepers are placed below the rail lines .This is done to distribute the load over a large area thereby avoiding the sinking of the rail line .
Foundations of high-rise buildings are made wide so that the load is distributed over a large area . Thereby reducing pressure on the ground .