6.1. Effective Acceleration Generates Apparent Mass:

In extended classical mechanics, effective acceleration (aᵉᶠᶠ) is inversely proportional to effective mass (Mᵉᶠᶠ). This relationship can be mathematically expressed as:

aᵉᶠᶠ ∝ 1/Mᵉᶠᶠ

​This means that as effective acceleration increases, there is a corresponding decrease in effective mass. This dynamic interaction leads to the generation of negative apparent mass (-Mᵃᵖᵖ). As effective acceleration increases, the effect of apparent mass becomes more pronounced, creating a unique and significant relationship between acceleration and mass within this framework.

The notion of apparent mass, particularly when it takes on a negative value, introduces a novel perspective on the behaviour of objects under acceleration. In this context, as an object's effective acceleration increases—potentially due to external forces or influences—the effective mass must decrease in order to maintain the equality described in the proportionality. Consequently, this decrease in effective mass manifests as a more pronounced negative apparent mass.

This relationship underscores a crucial aspect of extended classical mechanics, suggesting that the dynamics of motion and mass are interlinked in ways that deviate from classical interpretations. The generation of negative apparent mass illustrates how accelerated systems can exhibit behaviours that challenge traditional notions of mass and inertia. It reflects a deeper understanding of how effective forces interact with mass in a non-linear fashion, leading to counterintuitive outcomes, such as reduced resistance to acceleration or even increased responsiveness to applied forces.

In summary, the interplay between effective acceleration and apparent mass in extended classical mechanics reveals a complex relationship that enriches our understanding of mechanical systems. As effective acceleration increases, the resultant behaviour of apparent mass not only emphasizes the significance of acceleration in determining mass properties but also challenges established principles, paving the way for further exploration into the mechanics of motion.

6.2. Forces Generate Kinetic Energy:

In mechanical systems, the acting forces (F) are directly proportional to the kinetic energy (KE) produced within the system, represented as F ∝ KE. This fundamental relationship illustrates that when a force is applied to an object, it results in a change in the object's state of motion, leading to the generation of kinetic energy.

When a net force acts on an object, it causes the object to accelerate, which is quantitatively described by Newton’s second law. As the object accelerates, it gains velocity, and thus, its kinetic energy increases. This interaction emphasizes that the magnitude of the applied force influences the extent of kinetic energy generated: greater forces result in higher accelerations, which in turn produce more kinetic energy.

Additionally, this relationship underscores the principle of energy conservation within mechanical systems. The work done by the acting forces is converted into kinetic energy, illustrating that energy can transform from one form to another while remaining conserved. In this context, it is essential to consider not only the magnitude of the forces but also their direction and application, as they ultimately dictate the efficiency of kinetic energy generation and the overall dynamics of the system.

In summary, the proportionality between forces and kinetic energy is a cornerstone of classical mechanics, illustrating how the interplay of forces and motion underlies the generation and transformation of energy within mechanical systems.

6.3. Mass-Energy Equivalence: Extended Classical mechanics.

Concept of Mass-Energy Equivalence:

In the realm of extended classical mechanics, the principle of mass-energy equivalence takes on a nuanced perspective. Here, apparent mass (−Mᵃᵖᵖ) is not merely a theoretical construct but is fundamentally equivalent to kinetic energy (KE). This relationship underlines a crucial assertion: mass can be transformed into energy and, conversely, energy can manifest as mass. This interplay is reflective of a deeper connection between mass and energy that transcends traditional boundaries.

Understanding Apparent Mass:

The apparent mass, represented as −Mᵃᵖᵖ, is characterized by its negative value, suggesting distinct behaviour within the framework of extended classical mechanics. Rather than being a mere derivative of standard mass concepts, apparent mass embodies unique dynamics that arise from effective acceleration (aᵉᶠᶠ) and the contributions of various mass components, including normal matter and dark matter, while directly representing the effective mass derived from dark energy (Mᴅᴇ).

Kinetic Energy as a Transformative Agent:

Kinetic energy (KE) represents the energy of motion, mathematically defined as KE = 1/2·M·v², where M is mass and v is velocity. In extended classical mechanics, the kinetic energy generated by the interaction of forces can be directly related to the apparent mass. The equation −Mᵃᵖᵖ = KE encapsulates this relationship, reinforcing that the apparent mass can be understood as a manifestation of kinetic energy under specific conditions of acceleration and motion.

Interconnected Dynamics:

This equivalence suggests that as a system experiences changes in effective acceleration, there is a corresponding transformation of energy into apparent mass. For example, increased effective acceleration might lead to greater kinetic energy, thus enhancing the apparent mass in the system. This reciprocal relationship emphasizes that energy is not merely a by-product of motion but is fundamentally intertwined with mass, influencing how we understand the dynamics of systems in motion.

Consistency with Classical Mechanics:

While the notion of mass-energy equivalence is often associated with relativistic physics, its implications within the framework of classical mechanics cannot be overlooked. The assertion that -Mᵃᵖᵖ = KE provides a clear, classical interpretation of how mass and energy interact. This framework suggests that mass can be manipulated through the application of forces and accelerations, and as a result, energy dynamics emerge as an essential component of mechanical systems.

Conclusion:

In summary, the relationship -Mᵃᵖᵖ = KE within extended classical mechanics not only reaffirms the principle of mass-energy equivalence but also illustrates the intricate interplay between mass and kinetic energy. This relationship reveals deeper insights into the nature of forces and motion, highlighting how mass can be conceptualized as a dynamic quantity influenced by energy states and effective accelerations. Through this lens, we gain a more profound understanding of the mechanics governing our universe, bridging classical interpretations with modern concepts of energy and mass.

6.4. Equivalence of Apparent Mass and Dark Energy's Negative Effective Mass:

The equivalence between Apparent Mass (−Mᵃᵖᵖ) and Dark Energy's Negative Effective Mass (Mᴅᴇ) is crucial for understanding gravitational dynamics within the framework of extended classical mechanics. Both concepts are characterized by their negative mass properties, which influence gravitational interactions across cosmic scales. Their negative effective mass leads to repulsive forces that counteract the traditional attractive forces of ordinary matter and dark matter, shaping the structural formation and evolution of cosmic entities.

The alignment of these two concepts can be expressed as Mɢ = Mᴍ + (−Mᵃᵖᵖ), which mirrors the Chernin et al. framework. The presence of Dark Energy's negative effective mass (Mᴅᴇ) is conceptually equivalent to the apparent mass (−Mᵃᵖᵖ). This equivalence underscores the importance of both negative mass characteristics in determining the overall gravitational dynamics.

The implications of this equivalence become particularly pronounced under extreme conditions, such as high velocities and strong gravitational fields. The repulsive nature of both Apparent Mass and Dark Energy Effective Mass can significantly alter expected gravitational behaviours, particularly within galaxy clusters where the interplay between these masses dictates the formation and behaviour of large-scale structures.

Incorporating these concepts into gravitational models allows for better understanding of cosmic phenomena, such as galaxy formation and the universe's expansion rate.

6.5. Kinetic Energy with Negative Effective Mass:

In the context of extended classical mechanics, kinetic energy (KE) is intricately tied to the concept of negative effective mass, specifically apparent mass (−Mᵃᵖᵖ) and dark energy's negative effective mass (Mᴅᴇ). This relationship, expressed as KE ∝ −Mᵃᵖᵖ ∝ Mᴅᴇ, indicates that systems exhibiting negative effective mass behaviour lead to unconventional kinetic energy dynamics, deviating from classical interpretations.

Normally, kinetic energy is defined by the relationship KE = 1/2·M·v². In classical mechanics, as velocity (v) increases, a constant mass (M) would lead to an increase in kinetic energy. However, when considering negative effective mass, particularly in systems influenced by  apparent mass or dark energy, this traditional correlation is modified. The repulsive nature of negative effective mass alters the system's energy behaviour: as force increases and the apparent mass (−Mᵃᵖᵖ) grows, the effective mass in the equation F = (Mᴍ + (−Mᵃᵖᵖ))⋅aᵉᶠᶠ results in a decrease in the normal matter mass (Mᴍ) while still allowing for an increase in kinetic energy due to the negative contribution of apparent mass. The total effective mass Mᵉᶠᶠ = Mᴍ + (−Mᵃᵖᵖ) remains positive until Mᴍ = −Mᵃᵖᵖ.

As long as the effective mass Mᵉᶠᶠ remains positive, the system behaves in a manner similar to classical mechanics. However, once Mᴍ < −Mᵃᵖᵖ becomes negative, the kinetic energy undergoes a fundamental shift. In this state, kinetic energy transitions from traditional mechanical behaviour to characteristics akin to dark energy. Consequently, rather than gaining energy with acceleration, the system may exhibit behaviour where kinetic energy appears to decrease or reverse direction, defying classical expectations.

Such counterintuitive effects can manifest as systems gaining kinetic energy while seemingly decelerating or self-propelling against gravitational forces. The interaction between negative effective mass and positive mass in these scenarios leads to unique dynamics where kinetic energy does not operate under the conventional rules dictated by positive mass alone.

These unusual kinetic energy behaviours are primarily observable on intergalactic scales, where dark energy's influence is prominent. In gravitationally bound systems, like galaxies, the effects of negative effective mass are largely overshadowed by the stronger gravitational forces of ordinary and dark matter. Nevertheless, in large-scale cosmic phenomena, the role of negative effective mass becomes crucial for understanding the expansion of the universe and the formation of large-scale structures.

By integrating the concept of negative effective mass into the analysis of kinetic energy, extended classical mechanics offers a deeper comprehension of cosmic dynamics. This perspective challenges conventional principles of energy conservation and paves the way for new experimental and observational insights, particularly in regions dominated by dark energy and dark matter.