Examples of decreasing area to increase pressure
Answers
Answer:
Explanation:
1.A sharp knife cuts more effectively than a blunt knife as it has a very small surface area and exerts more pressure.
2.A nail has a pointed edge so that it exerts more thrust or pressure.
3. Tip of a sewing needle.
4.Edge of an arrow.
5.Edges of tools used to pierce things.
1) sharp knife cuts better than a blunt knike because it has less surface area and exerts more pressure
2) trucks hav pairs of wheels increasing surface area so that they do not apply more pressure on the road
3) a nail is sharp and has less surface area increasing its pressure on the wall and can be hammered easily
4) In hydraulic lift the side with lesser area give more pressure.
this is due to the equation
P=F/A,
ie as area decreases Pressure increases
5) .Tip of a sewing needle
6) Edges of tools used to pierce things
7) Edge of an arrow
8) it is difficult for us to walk on sand, because our feet sink into it. on the other hand , a camel which is much heavier can easily walk on sand . This is because a camel has a broad feet. The weight of the camel is spread over the large area covered by its feet. Thus, the pressure exerted by its body on the sand is less
9) school bag has a wide strap made of thick cloth so that the weight of bag falls over a large area of the shoulder of the child.
This produces less pressure on the shoulder and hence the child can carry heavy school bag more comfortably
10) The skies used by skiers are long and flat which reduce the pressure on the floor. This makes the skiers to slide over the flow easily and their feet do not sink in the ground .
Explanation:
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