# Force and Pressure

#### Gravitational Force

You know that a coin or a pen falls to the ground when It slips off your hand. The leaves or fruits also fall to the ground when they get detached from the plant. Have you ever wondered why It Is so? when the coin Is held In your hand It Is at rest. As soon as It Is released. It begins to move downwards. It Is clear that the state of motion of the coin undergoes a change. Can this happen without a force acting on It? Which Is tills force? Objects or things fall towards the earth because it pulls them. Tills force is called the force of gravity, or Just gravity. This is an attractive force. The force of gravity acts on all objects. The force of gravity acts on all of us all the time without our being aware of It. Water begins to flow towards the ground as soon as we open a tap. Water in rivers flows downward due to the force of gravity.

## Notes

Force and Pressure - Notes
1. Atmospheric Pressure
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2. Force - A Push or a Pull
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3. Gravitational Force
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4. Electrostatic Force
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5. Contact Forces (Muscular Force)
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6. Pressure
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7. Forces are due to an Interaction
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8. A Force can Change the State of Motion
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