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Notes ⇒ Class 9th ⇒ Science ⇒ 10. Gravitation

# Notes 10. Gravitation - Thrust And Pressure | Class 9 Science - Toppers Study

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## Notes 10. Gravitation - Thrust And Pressure | Class 9 Science - Toppers Study

CBSE board students who preparing for class 9 ncert solutions maths and Science solved exercise chapter 10. Gravitation available and this helps in upcoming exams 2023-2024.

### You can Find Science solution Class 9 Chapter 10. Gravitation

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Chapter 10 Science class 9

### Thrust And Pressure class 9 Science Chapter 10. Gravitation

• Notes 10. Gravitation - Thrust And Pressure | Class 9 Science - Toppers Study
• Class 9 Ncert Solutions
• Solution Chapter 10. Gravitation Class 9
• Solutions Class 9
• Chapter 10. Gravitation Thrust And Pressure Class 9

## Notes 10. Gravitation - Thrust And Pressure | Class 9 Science - Toppers Study

### 10. Gravitation

Thrust And Pressure:

Weight:  Weight is the force acting vertically downwards.

Thrust: The force acting on an object perpendicular to the surface is called thrust.

Pressure: The force (thrust) exerted by an object per unit area is called pressure. SI unit of pressure N/m2 or N m-2 This unit is known as Pascal, which is denoted by Pa.

Pressure = Thrust/area

Understanding this by a simple example:

lets force (thrust) = 10 N

And Area = 2 m2,

then,

Pressure = 10 / 2 N/m2

= 5 N/m2

if area increases by 5 m2 on same force.

Pressure = 10 / 5 N/m2

= 2 N/m2

We get conclusion that if increases the area on same force

then

Important points:

• The effect of thrust depends on the area on which it acts.
• Area is inverse proportionally to the pressure, It means the same force acting on a smaller area exerts a larger pressure, and a larger area exerts a smaller pressure.
• if larger thrust (force) acting on same area pressure will be larger and smaller thrust acting on same area pressure will be smaller, so relation between thrust and pressure is direct proportionally.
•

Up thrust or buoyant force depends on:

(i) The size or volume of the body immersed in a liquid.

(ii) The density of the liquid in which the body is immersed.

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4. Structure of The Atom
5. The Fundamental Unit of Life
6. Tissues
7. Diversity in Living Organisms
8. Motion
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10. Gravitation
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12. Sound
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