Mass of a particle at speed of light

Thread starter ally1h
Start date Dec 11, 2008
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Light Mass Particle Speed Speed of light

AI Thread Summary

As a particle approaches the speed of light, its relativistic mass increases significantly, theoretically approaching infinity. This phenomenon is rooted in Einstein's theory of relativity, which states that as an object's speed increases, its energy and momentum also increase, leading to an increase in mass. The concept of mass becoming infinite at light speed is crucial for understanding why particles with mass cannot reach that speed. The discussion references a source from the US Energy Department for further clarification. Understanding this principle is essential in the study of high-energy physics and the behavior of particles in accelerators.

Dec 11, 2008

ally1h

Homework Statement

I remember hearing in class that the mass of a particle nears infinity as the speed of the particle nears the speed of light. Is this true? And why is this true?

Homework Equations

The Attempt at a Solution

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Dec 11, 2008

LowlyPion

Homework Helper

Never let it be said the government isn't of some use.

From the US Energy Department:
http://www.Newton.dep.anl.gov/askasci/phy99/phy99186.htm

Dec 11, 2008

ally1h

Thank you! :)

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