Explain what is Gravitational force and Give one example
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Answer:
Newton’s Law of Universal Gravitation is used to explain gravitational force. This law states that every massive particle in the universe attracts every other massive particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This general, physical law was derived from observations made by induction. Another way, more modern, way to state the law is: ‘every point mass attracts every single other point mass by a force pointing along the line intersecting both points. The force is proportional to the product of the two masses and inversely proportional to the square of the distance between the point masses’.
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Examples of Gravity
Gravity is the force that pulls all elements of matter together. Matter refers to things you can physically touch. The more matter there is, the greater the amount of gravity or force. This means that the Earth or other planets have a great deal of pull and that everything on Earth is pulled back to Earth.
Invisible Forces of Gravity
Gravity is the mutual atraction of two bodies in the universe. Since gravity refers to an invisible force pulling matter together, there are many examples of gravity. Every single thing has gravity, including people.
Some objects have much more gravity than others. The Earth, for example, has more gravity than people. This is why an object that falls is drawn to the Earth and returns to the Earth instead of being drawn to a person and flying at that person.
Some examples of the force of gravity include:
The force that holds the gases in the sun.
The force that causes a ball you throw in the air to come down again.
The force that causes a car to coast downhill even when you aren't stepping on the gas.
The force that causes a glass you drop to fall to the floor.
The force that keeps the Earth and all of the planets in line in the proper position in their orbits around the sun.
The force that propels a toddler down a slide.
The force that causes the moon to revolve around the Earth.
The force that keeps Jupiter's moons located around the planet.
The force from the moon that causes the tides of the ocean.
The force that causes your drink to rest in the bottom of your glass instead of hovering near the top of your glass.
The force that causes an apple to fall downward from an apple tree.