How can Newtonian gravity be converted to m/s without prefix?

In summary, the concept being discussed is the gravitational force formula Fgrav=(GMm)/(r^2). This force is measured in Newtons and can be converted to units of m/s^2 using Newton's 2nd Law, F=ma. However, this formula does not involve velocity, which is measured in m/s.
  • #1
TheNormalForc
12
0
Before I inundate you with various elementary problems I'm facing, I need help with the concept.

Fgrav=(GMm)/(r^2)

So Fgrav is in units of Newtons, correct? How would one convert that to m/s?
 
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  • #2
Gravity is just a force an object with mass experiences, which can be translated to acceleration with Newton's 2nd Law, F=ma. It has nothing to do with velocity (which has units m/s). However you can turn it into units of m/s^2, which is the units of acceleration with the above mentioned law: a=F/m, therefore:
[tex]
a_{gravity}=\frac{GM}{r^2}
[/tex]

Where M is the mass of the object that is creating the gravitational field, not the "accelerating object".
 
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  • #3


Yes, Fgrav is in units of Newtons. To convert Newtons to m/s, we need to consider the equation F=ma, where F is the force in Newtons, m is the mass in kilograms, and a is the acceleration in m/s^2. We can rearrange this equation to solve for a, which gives us a=F/m. So, to convert Newtons to m/s, we need to divide the force by the mass. In the case of Newtonian gravity, the force is given by Fgrav=(GMm)/(r^2), where G is the gravitational constant, M is the mass of one object, m is the mass of another object, and r is the distance between the two objects. So to convert Fgrav to m/s, we would divide it by the mass of one of the objects involved in the gravitational interaction. However, it's important to note that this conversion only applies to the acceleration due to gravity, not the force itself.
 

1. What is Newtonian gravity?

Newtonian gravity is a theory proposed by Sir Isaac Newton in the 17th century to explain the force of gravity between objects. It states that every object in the universe exerts a force of attraction on every other object, and this force is directly proportional to the mass of the objects and inversely proportional to the square of the distance between them.

2. How does Newtonian gravity differ from Einstein's theory of general relativity?

Newtonian gravity is a classical theory that describes the force of gravity as a simple attraction between masses, whereas general relativity is a modern theory that explains gravity as the curvature of space-time caused by the presence of massive objects.

3. What is the law of universal gravitation?

The law of universal gravitation is a fundamental principle of Newtonian gravity that states that every object in the universe attracts every other object with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

4. How does Newtonian gravity explain the motion of planets?

According to Newton's laws of motion, planets move in elliptical orbits around the sun due to the gravitational force exerted by the sun. The gravitational force keeps the planets in their orbits and also causes them to accelerate towards the sun.

5. Is Newtonian gravity still used in modern science?

Yes, Newtonian gravity is still used in many fields of science, including astronomy, engineering, and physics. While it has been superseded by Einstein's theory of general relativity in some cases, Newtonian gravity is still a very accurate and useful theory for describing the behavior of objects in everyday situations.

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