Question

Electromagnetic force calculation for railgun

Answer 1

1. The problem statement, all variables and given/known data Electromagnetic Railgun consists of two parallel, distant from the horizontal, very long rails, after which moves perpendicular to the rails, linking them to the metal bar of mass m. The rails are in a vertical magnetic field intensity B. What is the speed limit the beam, if the voltage is connected to the rails U. Skip the resistance to motion of the beam. 3. The attempt at a solution 
May i use B = μ o I 2 π r B=μoI2πr Which formula combined to calculate the velocity? Maybe: F m a x = B v q Fmax=Bvq F m a x = μ o I 2 π r v q Fmax=μoI2πrvq V = F m a x μ o I q 2 π r 

Reference https://www.physicsforums.com/threads/electromagnetic-railgun-calculations.540167/
May i use B = μ o I 2 π r B=μoI2πr Which formula combined to calculate the velocity? Maybe: F m a x = B v q Fmax=Bvq F m a x = μ o I 2 π r v q Fmax=μoI2πrvq V = F m a x μ o I q 2 π r 

Reference https://www.physicsforums.com/threads/electromagnetic-railgun-calculations.540167/