We explain what dynamics is and what are the fundamental laws of dynamics. History of discovery, and related principles.
The dynamics is the part of physics that studies the relationship existing between the forces acting on a body and the effects that will occur on the movement of that body.
Ancient Greek thinkers believed that the speed and constancy of movement in the straight line of a body (phenomenon described years later as uniform rectilinear motion or MRU) were proportionally related to a constant force. By extension, it was believed that the fall of a body belonged to that category, so the body that was heavier was supposed to fall faster . Then, Galileo Galilei understood that the fall of the bodies could not be a uniform movement, and that from the same height, two bodies of different weight take the same time to fall
. This context was what made it possible that some years later, Isaac Newton established the three fundamental laws of dynamics, which explained the fundamental patterns of body behavior.
These laws are the fundamental laws of dynamics, which apply primarily to uniform rectilinear motion. However, there is also a dynamic of the circular movement , which happens when the force that is applied to a body in constant modulus can be maintained, perpendicular to the direction of movement. This occurs, for example, in the case of the constant force of attraction of the Sun on a planet, which prevents it from exerting a rectilinear movement instead of the orbit.
However, there is also the analysis of the behaviors of bodies when various particles intervene , in addition to the forces mentioned. The part of physics that uses statistical methods to study the overall behavior of systems is thermodynamics.
It has a series of principles, among which we can mention the thermal equilibrium , that is, the equality between the heat received and that emitted by the body, achieved through heat exchange. It is also said that the energy is not produced or destroyed , but that it is transformed, making it impossible to produce work without energy consumption , and from that it emerges that heat cannot be completely transformed into work, there is always a loss.
There is also a colloquial use of the term, which is applied to speak symbolically of things that are in motion . You can talk about the dynamics of political processes , public events or anything, to refer to ‘how it developed’ for a period of time . Also, it is used as an adjective to talk about people who are very restless and spend a lot of time moving.
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