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Sorry if this question is silly I'm not a specialist.. I'm just curious

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In summary, the conversation discusses the concept of gravity and its range of attraction. While some argue that gravity has an infinite range, others point out that infinity is not a number and cannot be used in calculations. The basic equation for gravity suggests that as r approaches infinity, the force approaches zero, but this does not mean that gravity has a finite range. Instead, it means that the force becomes small but not zero at large distances.

- #1

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Sorry if this question is silly I'm not a specialist.. I'm just curious

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##F = G \frac{m_1\,m_2}{r^2}##

Of course the force F goes to zero if r goes to infinity. But that's not how we would interpret

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I can explain that the concept of gravity having an infinite range is based on our current understanding of the laws of physics. According to the theory of general relativity, gravity is a force that is caused by the curvature of space and time. This means that the effects of gravity can potentially reach an infinite distance, as the curvature of space and time extends infinitely.

However, it is important to note that the strength of gravity decreases with distance, so while it may have an infinite range, its influence becomes weaker as the distance between objects increases. This is why we do not feel the effects of gravity from distant objects, such as stars and galaxies, as strongly as we do from objects closer to us.

In terms of the equation you mentioned, F=[g(m1m2)] / r^2, the denominator does not represent the distance between objects, but rather the square of the distance. This means that as the distance increases, the denominator becomes larger, but the overall force still exists.

It is also worth noting that gravity is not the only force at play in the universe. There are other forces, such as electromagnetism, that can counteract the effects of gravity and prevent objects from being pulled in by it.

I hope this explanation has helped clarify the concept of gravity and its range. It is a complex and fascinating topic, and it is completely understandable to have questions about it. Keep asking questions and exploring the wonders of science!

Gravity is a force that exists between all objects with mass. It is responsible for keeping planets in orbit around the sun, and for keeping objects on Earth from floating away into space.

Gravity works by pulling objects towards each other. The strength of the force depends on the mass of the objects and the distance between them. The larger the mass and the closer the distance, the stronger the gravitational force.

Objects fall to the ground because of the force of gravity. The Earth's mass creates a gravitational force that pulls objects towards its center. This is why objects always fall downwards towards the ground.

Mass is a measure of the amount of matter an object contains, while weight is a measure of the force of gravity acting on an object. Mass remains constant regardless of location, while weight can change depending on the strength of gravity at that location.

The concept of gravity was discovered by Sir Isaac Newton in the 17th century. His famous law of universal gravitation explained the relationship between mass, distance, and the force of gravity. It was later refined by Albert Einstein's theory of general relativity in the 20th century.

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