Why is there a cosmic speed limit?

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The discussion centers on the cosmic speed limit, specifically why particles and objects cannot exceed the speed of light. Participants express curiosity about the underlying forces that impose this limit. One user suggests checking the FAQ for answers, while another indicates they found a related thread for further information. The conversation highlights the ongoing interest in understanding the fundamental principles of physics governing speed limits in the universe. This topic remains a key area of inquiry in theoretical physics.
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Does anyone know what exactly causes this limit? Why can't particles or normal objects move faster than the speed of light? There has to be some force acting upon these particles/objects that limits them, right?
 
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I'm not sure, but this might be in the FAQ. Try looking there first.
 
Drakkith said:
I'm not sure, but this might be in the FAQ. Try looking there first.

Nope, already checked.
 

Thread 'Derivation of Hamilton's Principle: Questions'

I have recently been really interested in the derivation of Hamiltons Principle. On my research I found that with the term ##m \cdot \frac{d}{dt} (\frac{dr}{dt} \cdot \delta r) = 0## (1) one may derivate ##\delta \int (T - V) dt = 0## (2). The derivation itself I understood quiet good, but what I don't understand is where the equation (1) came from, because in my research it was just given and not derived from anywhere. Does anybody know where (1) comes from or why from it the...
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