- #1
johann1301
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Newtons first law should not be termed an expression of inertia
LAW I.
EVERY BODY PERSEVERES IN ITS STATE OF REST, OR OF UNIFORM MOTION IN A RIGHT LINE, UNLESS IT IS COMPELLED TO CHANGE THAT STATE BY FORCES IMPRESSED THERON. - «Isaac Newton`s Principa»
In case inertia could be removed from a body (e.g by a relative of Maxwell`s demon), the following situation is presumably true;
PART I
1. A body B has a state of uniform motion in a right line
2. Inertia is removed from the bodies mass
3. The bodies state of motion is unchanged*
PART II
4. Another (inertial)body A comes in contact with Body B
5. This contact causes B to change in its state of motion which is described as mass over a distance per second squared. Also known as force.
I conclude the following about LAW I;
PART I
Every body perseveres in its state of uniform motion in a right line regardless of inertia.
PART II
Any body can be compelled to a change in its state of motion by forces regardless of inertia.
Newtons first law is therefore independent of inertia and should not be termed an expression of inertia or «the law of inertia».
Some examples where LAW I is termed an expression of inertia;
http://www.khanacademy.org/video/Newton-s-first-law-of-motion?playlist=New and Noteworthy
LAW I.
EVERY BODY PERSEVERES IN ITS STATE OF REST, OR OF UNIFORM MOTION IN A RIGHT LINE, UNLESS IT IS COMPELLED TO CHANGE THAT STATE BY FORCES IMPRESSED THERON. - «Isaac Newton`s Principa»
In case inertia could be removed from a body (e.g by a relative of Maxwell`s demon), the following situation is presumably true;
PART I
1. A body B has a state of uniform motion in a right line
2. Inertia is removed from the bodies mass
3. The bodies state of motion is unchanged*
PART II
4. Another (inertial)body A comes in contact with Body B
5. This contact causes B to change in its state of motion which is described as mass over a distance per second squared. Also known as force.
I conclude the following about LAW I;
PART I
Every body perseveres in its state of uniform motion in a right line regardless of inertia.
PART II
Any body can be compelled to a change in its state of motion by forces regardless of inertia.
Newtons first law is therefore independent of inertia and should not be termed an expression of inertia or «the law of inertia».
Some examples where LAW I is termed an expression of inertia;
http://www.khanacademy.org/video/Newton-s-first-law-of-motion?playlist=New and Noteworthy
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