# Why is there inertia

## inertia

Indolence is a quality of **Masses**. Inertia means that every body tries to remain in its state of motion and opposes a change in movement with resistance: Still objects oppose movement; moving objects offer resistance to deceleration or distraction. That is precisely the statement of the *Law of inertia*, the first of Newton's three laws. But why is it that masses are inert?

### Newtonian gravitational force

Masses are attracted by gravitational forces. The English physicist and mathematician could already do this *Sir Isaac Newton* in the 17th century with his **Newton's law of gravitation** occupy. The equation for the **Gravitational force** is on the right. Are in it *G* the gravitational constant with a numerical value of 6,672 × 10^{-11} m^{3} kg^{-1} s^{-2}, *M.* and *m* two masses that are at a distance *r* like to be located. The force has the typical drop with it *r*^{-2} (like Coulomb's law of electrostatics). Physicists also speak of one **1 / r potential**. The force is precisely the negative gradient of this potential.

### The long arm of gravity

This gravitational interaction has one **infinite range**. For large numerical values of *r* the gravitational force becomes very small, but remains finite. Above all, the gravitational force can not only be shielded from charges of different polarity: there are no 'negative masses'! That is the main difference between gravity and electromagnetic force. The infinite range is also reflected in the fact that the (hypothetical) graviton of the quantum field theories**Rest mass zero** have.

This long range has the consequence that ultimately *all the crowds* feel in the universe (theoretically). One can therefore say that the inertia of individual masses is a consequence of the fact that they interact with all other masses.

### Gravitational force takes time to spread

The interaction is, however **not instantaneously**, as Newton assumed, but propagates at finite speed, the **Vacuum speed of light***c*, out. Gravitational waves, as described in general relativity (GTR), propagate at the speed of light.

### Equivalence principle

The equivalence principle requires that **inert and heavy mass equivalent** be. So you cannot decide in a closed box whether it is at rest in a gravitational field or whether it is evenly accelerated by a constant force. The principle is one of the pillars of ART.

### Inertial forces

As inertial forces *inertial forces*) denotes forces that occur when a reference system is accelerated. Centrifugal force and Coriolis force are two inertial forces that occur in rotating frames of reference (which are not inertial). Inertial forces are also called *Pseudo-forces*because their occurrence depends on the frame of reference. Inertial forces correct Newtonian or relativistic mechanics, as it were seen from different systems: One system is an inertial system and has an inertial observer in it. The other system rotates and is therefore a non-inertial system with a rotating, non-inertial observer. The rotating observer now feels inertial forces, for example when he is sitting in a carousel and the centrifugal force is pushing him outwards. But the inertial observer who looks at the carousel from outside, for example, does not feel any inertial forces. From his point of view, the inertial forces try to make the movement of the non-inertial observer inertial, i.e. straight.

- Strategies to prepare for SSC CGL
- What is a telephone used for?
- What language is used to create websites
- After graduation, depression is a real thing
- Why do people try to act empty
- Is the lesson worth the opportunity costs
- Should America attack North Korea
- How do we rate a new website
- Who are the best classic Christian songwriters

- What is the most common college degree
- What is spur gear theory
- How do I keep my husband's attention
- What are delivery processes
- How are the SEO trends
- Why are my macarons tilted
- How much does cola cost in China
- Was Martin Luther a humanist
- Should I keep asking anonymous questions
- Like my profile picture
- Narcolepsy is a major disease
- What is Mocha Java
- Why do people long for superiority
- Which animal ends with the letters EE
- Who is the Minister of Sports of Karnataka
- How long has it been since you were diagnosed
- At what age is a puppy weaned
- Why are there no muscular geniuses
- Why do I avoid my mother
- Why should I be a cook
- Yma Sumac is the greatest singer of all time
- How to calculate irregular shapes
- Can psychopathy be confused with autism
- How are the seas on earth?