Newton must respect the law of lever

In summary, Newton must respect the law of lever as it is the first law in physics and everything must comply with it. The law states that the force and distance have an inverse relationship, and this is seen in the example of two bodies falling towards each other due to gravitational pull. However, this conflicts with Newton's second law of motion and the law of conservation of energy. This conflict can be resolved by following the law of lever, which states that the force and distance must have an inverse ratio. Therefore, Newton's disobedience to the law of lever is the cause of this conflict.
  • #1
dedaNoe
52
0
Newton must respect the law of lever as we all must.
The law of lever is the 1st law ever in physics and every thing
must agree with it.
\documentclass{article}
\begin{document}
\section{Newton must respect the law of lever}
\hspace{1 cm}I know most of you will object me as I'm the first
with such approach. But, I do have a point so please let me make
it. Assume that body A and body B have masses $M_a$ and $M_b$,
such that $M_a>M_b$. They are initially at distance R and without
initial push they start to fall on each other only because their
mutual gravity pull. We view only the part of the interaction from
the release until the collision. The gravity force for each body
according to Newton is given with:
\begin{equation}
F=G\frac{M_a M_b}{R^2}
\end{equation}
Newton's gravity law respects his third law, so:
\begin{equation}\label{Newton3}
F_a=-F_b
\end{equation}
Newton's second law claims that force equals to mass times
acceleration so \ref{Newton3} will turn into:
\begin{equation}
a_a M_a = -a_b M_b
\end{equation}
This means that $a_a < a_b$ because $M_a > M_b$ so within same
time body A will pass smaller distance from body B i.e.
\begin{equation}\label{condit}
\Delta X_a<\Delta X_b
\end{equation}
The work done by some force while making displacement is given
with:
\begin{equation}\label{Work_done}
W=\int_{X1}^{X2} Fdx
\end{equation}
In our system we have only two forces making displacement - only
two works done and they must cancel because of conservation of
energy for such a closed system given with:
\begin{equation}\label{Cosevr_energy}
\sum W_i=0
\end{equation}
From \ref{Cosevr_energy} we have $W_a=-W_b$. Widen up it should
give:
\begin{center}
$\int_{X_{1a}}^{X_{2a}}F_a dx=-\int_{X_{1b}}^{X_{2b}}F_b dx$

$\int_{X_{1a}}^{X_{2a}}Fdx=\int_{X_{1b}}^{X_{2b}}Fdx$

$F(X_{2a}-X_{1a})=F(X_{2b}-X_{1b})$

\end{center}
So it must be:
\begin{equation}\label{must}
F\Delta X_a=F\Delta X_b
\end{equation}
But it is not so because of \ref{condit}. By the way the equation
\ref{must} is very similar to the law of lever only though the
forces must have inverse the ratio of their distances or:
\begin{equation}\label{Lever}
F_a D_a = D_b F_b
\end{equation}
Therefore, the conflict between Newton's gravity and conservation
of energy is due to Newton's disobedience for the law of lever.
\end{document}

tex doesn't work that well. Just copy pase into your TeX editor
 
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  • #2
If the work done on the bodies have opposite sign, why do they both gain kinetic energy? Last time I checked, work was positive when force and displacement are pointing in the same direction.
 

Related to Newton must respect the law of lever

1. How does the law of lever explain the relationship between force and distance?

The law of lever states that the force applied on one side of a lever is equal to the force on the other side multiplied by the distance from the fulcrum. This means that the longer the distance from the fulcrum, the less force is needed to balance the lever.

2. What is the importance of the fulcrum in the law of lever?

The fulcrum is the fixed point around which the lever rotates. It is essential to the law of lever because it determines the mechanical advantage of the lever. Without a fulcrum, the lever would not be able to function properly.

3. Can the law of lever be applied to other objects besides levers?

Yes, the law of lever can be applied to any rigid object that can rotate around a fixed point, such as a see-saw or a crowbar. It is a fundamental principle of mechanics that can be observed in various everyday objects.

4. How does the law of lever contribute to the development of modern machines?

The law of lever is the basis for many modern machines that utilize levers, such as scissors, pliers, and wrenches. Understanding this law has also led to the development of more complex machines, such as cranes and forklifts, which use multiple levers to lift heavy objects.

5. What role did Sir Isaac Newton play in the development of the law of lever?

Sir Isaac Newton did not directly contribute to the development of the law of lever. It was actually first discovered by the ancient Greek mathematician Archimedes. However, Newton's laws of motion, specifically the first law of inertia, helped to explain the principles behind the law of lever and its applications in mechanics.

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