Gravitational constant

In summary, the gravitational constant, denoted by G, is a fundamental physical constant that quantifies the strength of the gravitational force between two objects with mass. The currently accepted value for G is approximately 6.674 x 10^-11 m^3 kg^-1 s^-2, determined through experiments and subject to small variations. It is typically measured using a torsion balance and is believed to be a universal constant, although some theories suggest it may vary in extreme conditions. The importance of the gravitational constant lies in its role in calculating the gravitational force, which is responsible for many phenomena in the universe.
  • #1
blue__boy
8
0
I am using the Gravitational constant in "the Newton's law of universal gravitation Equation"

I just want to know is the Gravitational constant always = 6.67*10^-11

Thanks so much!
 
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  • #2
Yes, you should always use that value. That is why its known as constant :smile:
 
  • #3


I can confirm that the Gravitational constant, also known as the universal gravitational constant, is indeed always equal to 6.67*10^-11 in the Newton's law of universal gravitation equation. This constant represents the strength of the gravitational force between two objects and is a fundamental constant in physics. It is a universal value and does not change in different situations or locations. It is derived from experiments and observations and has been extensively tested and verified by scientists. Therefore, it is a reliable and accurate value to use in calculations involving gravitational forces.
 

What is the gravitational constant?

The gravitational constant, denoted by G, is a fundamental physical constant that appears in the equation for Newton's law of universal gravitation. It quantifies the strength of the gravitational force between two objects with mass.

What is the value of the gravitational constant?

The currently accepted value for the gravitational constant is approximately 6.674 x 10^-11 m^3 kg^-1 s^-2. This value was determined through experiments and is subject to small variations due to measurement uncertainties.

How is the gravitational constant measured?

The gravitational constant is typically measured using a torsion balance, which consists of a long horizontal arm with two small masses attached to each end. The gravitational force between the masses causes the arm to twist, allowing for the calculation of G.

Does the gravitational constant vary in different parts of the universe?

The current understanding is that the gravitational constant is a universal constant and does not vary in different parts of the universe. However, some theories suggest that G may vary in extreme conditions, such as near black holes.

Why is the gravitational constant important?

The gravitational constant is important because it allows for the calculation of the gravitational force between objects with mass. This force is responsible for many phenomena in the universe, such as the motion of planets and the formation of galaxies.

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