Solving an ODE Related to Relativistic Mass Change

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SUMMARY

The discussion focuses on solving the ordinary differential equation (ODE) related to the relativistic mass change, specifically the equation \(\frac{dp}{dt} = \frac{d}{dt}\frac{mv}{\sqrt{1-\frac{v^2}{c^2}}} = F\). The objective is to find the velocity function \(v(t)\) and demonstrate that \(v\) approaches the speed of light \(c\) as time \(t\) approaches infinity, as well as to calculate the distance traveled over time \(t\) starting from rest. The user attempted to manipulate the equation into a separable form or a standard second-order linear ODE but faced challenges in progressing towards a solution.

PREREQUISITES
  • Understanding of ordinary differential equations (ODEs)
  • Familiarity with relativistic physics concepts, particularly mass and velocity
  • Knowledge of calculus, specifically integration techniques
  • Proficiency in manipulating differential equations
NEXT STEPS
  • Study the method of integrating ODEs with constant forces
  • Learn about relativistic dynamics and the implications of mass change with velocity
  • Explore numerical methods for solving ODEs when analytical solutions are difficult
  • Investigate the concept of limits in calculus to understand behavior as \(t\) approaches infinity
USEFUL FOR

Students studying physics, particularly those focusing on relativistic mechanics, as well as mathematicians and engineers interested in solving complex ordinary differential equations.

renlok
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Homework Statement


[tex]\frac{dp}{dt} = \frac{d}{dt}\frac{mv}{\sqrt{1-\frac{v^2}{c^2}}} = F[/tex]
Find v(t) show that v -> c as t -> infinity & find the distance traveled in time t if the object starts from rest.

Homework Equations


The Attempt at a Solution


Ive tried rearranging it into either a separable ODE or into the form ay'' + by' + cy = 0 but haven't gotten anywhere.

really grateful for any help :)

(I think i posted this in the wrong board...)
 
Physics news on Phys.org
Is the force [tex]F[/tex] constant? If it is, this can be directly integrated from [tex]t=0[/tex] to [tex]t[/tex].
 

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