
Pressure = Force/Area. Explain.
Answer
441k+ views
Hint: Have you ever wondered why our knives must be so sharp, or why the nails we use have a sharp point? The concept of pressure contains the answers to all of these questions. It is the ratio of the force applied to the surface area applied.
Complete answer:
The force exerted on a surface divided by the area over which that force acts is defined as pressure. Because pressure is defined as force divided by area, its meter-kilogram-second (MKS) units are Newtons per square meter ( ). The units in the foot-pound-second (FPS) system are pounds per square inch (psi). Because force is directly proportional to pressure, the more force you apply to something, the more force you apply upon a fixed area, the more pressure you create.
Pressure is expressed in pounds per square inch, Newtons per square meter, or Pascals. Other units for expressing pressure include atmosphere, bar, torr, and meters of sea water.Pascal is a derived unit from the SI unit of pressure.The intriguing aspect of pressure is that it is a scalar quantity, meaning it has only magnitude but no direction. The value of pressure can be either positive or negative.
Because the pressure is proportional to the area over which the force acts, the pressure can be increased and decreased without affecting the force. If the force applied remains constant, the pressure increases as the surface shrinks, and vice versa.Pressure can be seen in the operation of a vacuum cleaner. The vacuum's fan creates a low-pressure zone, making it easy to suck dust particles inside the vacuum.Another example of pressure is cutting with a knife. The knife's exposed area is small, but the pressure is sufficient to cut the vegetables and fruits.
Note: Because the earth's atmospheric air is surrounded by a layer of gases, the pressure exerted by this air surrounding the earth is known as the 'atmospheric pressure.' It has a value of 101325 Pa at sea level.
Complete answer:
The force exerted on a surface divided by the area over which that force acts is defined as pressure. Because pressure is defined as force divided by area, its meter-kilogram-second (MKS) units are Newtons per square meter (
Pressure is expressed in pounds per square inch, Newtons per square meter, or Pascals. Other units for expressing pressure include atmosphere, bar, torr, and meters of sea water.Pascal is a derived unit from the SI unit of pressure.The intriguing aspect of pressure is that it is a scalar quantity, meaning it has only magnitude but no direction. The value of pressure can be either positive or negative.
Because the pressure is proportional to the area over which the force acts, the pressure can be increased and decreased without affecting the force. If the force applied remains constant, the pressure increases as the surface shrinks, and vice versa.Pressure can be seen in the operation of a vacuum cleaner. The vacuum's fan creates a low-pressure zone, making it easy to suck dust particles inside the vacuum.Another example of pressure is cutting with a knife. The knife's exposed area is small, but the pressure is sufficient to cut the vegetables and fruits.
Note: Because the earth's atmospheric air is surrounded by a layer of gases, the pressure exerted by this air surrounding the earth is known as the 'atmospheric pressure.' It has a value of 101325 Pa at sea level.
Latest Vedantu courses for you
Grade 11 Science PCM | CBSE | SCHOOL | English
CBSE (2025-26)
School Full course for CBSE students
₹41,848 per year
Recently Updated Pages
Master Class 9 General Knowledge: Engaging Questions & Answers for Success

Master Class 9 English: Engaging Questions & Answers for Success

Master Class 9 Science: Engaging Questions & Answers for Success

Master Class 9 Social Science: Engaging Questions & Answers for Success

Master Class 9 Maths: Engaging Questions & Answers for Success

Class 9 Question and Answer - Your Ultimate Solutions Guide

Trending doubts
Find the largest number which divides 615 and 963 leaving class 9 maths CBSE

Describe the circumstances leading to the outbreak class 9 social science CBSE

In a morning walk three persons step off together -class-9-maths-CBSE

Which places in India experience sunrise first and class 9 social science CBSE

When did South Africa become independent A 16 April class 9 social science CBSE

The president of the constituent assembly was A Dr class 9 social science CBSE
