УДК 66.074

Altynbekov Feliks, Satayev Marat, Altynbekov Rustem

M.Auezov South - Kazakhstan state university

Concerning One Analysis of the Main Law of Dynamics

In 1687 Newton (1643-1727) defined the 2^nd law in his writing “Mathematical Principals of Natural Philosophy” as Change of motion quantity is proportional to the applied force and takes place in direction of the line on which this force works (translation of A.N. Krylov, an academician) «Mutationem motus proportionalem esse vi motrici impressae et fieri secundum lineam rectam qua vis ilea imprimitus».

1. How does the definition of the Newton’s 2^nd law correlate with its formula: F = ma

2. In this formula there is no implication on acceleration a?

3. First time the notion of the acceleration (centripetal) gave Huygens (1629-1695) almost at same years.

4. By Newton during a body free fall F=mg=G i.e. force is limited by mass of the body. But if we shoot different masses with an equal force down?

5. In our opinion to define the concept of the force it would be more proper to use weight but not mass and speed but not acceleration.

6. In operation of mechanisms the periods of acceleration and braking take considerable less time than duration of the uniform motion.

7. In the end the acceleration is a speed derivative.

In our view the force is what that gives to the weight G kg the speed V m/s

On the other hand – work in a unit of time i.e. power.

We assert that force and power are same value. It is not without a reason all nations have a saying “what a force and what a power”.

It is known that after 1913 the main units of measurements are units of mass, time and length.

Then the units of measurements of force and power are:

The physical meaning of the unit of force and power is that it is the force or power , operating on a body taking into account acceleration of gravity

Thus if this assumption is correct many positions of physics, theoretical and applied mechanics should be reconsidered.