Question

why force is equal to area into pressure​

Answer 1

Answer:

Ava and Eva are identical twins who are the same in every way, including their weight. One day, Ava and Eva decide to go for a walk in the snow. They get dressed, and then Ava puts on her favorite red heels. Meanwhile, Eva, who has always been the more practical sister, puts on her snowshoes.

As soon as they step out onto the snow, Ava's heels sink right through while Eva has no trouble walking on top of the snow in her snowshoes! Why did this happen? If Ava and Eva weigh the same and are exactly the same size, why did Ava fall through the snow while Eva did not?

This occurred because even though both girls exerted the same force on the ground, Eva's snowshoes spread that force over a larger area, causing the pressure on the ground to be much less.

Pressure is defined as the force exerted on a surface divided by the area over which that force acts.



Force is measured in units of Newtons (N), named after the famous scientist Isaac Newton. Area is typically measured in units of meters squared (m2). Since pressure is calculated by dividing force by area, it has units of Newtons per meter squared (N/m2), and this unit is given a new name, Pascals (Pa).

1 Pa = 1 N/m2

Because her high heels only have a small area in contact with the ground (or snow), when Ava tried to walk on the snow in heels, all of her weight was pushing on a very small area of the snow, creating a huge amount of pressure and causing the snow to collapse. Meanwhile, Eva's snowshoes spread the same force over a much larger area, so there was much less pressure on the snow. Even though the total force was the same, the pressure was very different, and so there was a very different outcome.

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Answer 2

Explanation:

Pressure and force are related, and so u can calculate one if u know the other by using physics equation, P==F/A. Because pressure is force divided by area, its meter - kilogram second units are newtons per sq. Meter or M/m2. You don't need to be underwater for the experience of pressure from a fluid.