(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

mass=m

length=l

initialspeed=v0

magneticfield=B

Resistor=R

2. Relevant equations

A metal rod of mass m and length l slides on two parallell frictionless rails.

A uniform magnetic field is directed perpendicular to the plane of the rails.

There is no external agent applying a force to the rod.

Show that v(t) = v0e^t/T

where T = mR/(Bl)²

3. The attempt at a solution

I dont know where to start. Shall I construct a differentialequation including dt and dA? If not the solution I would be greatful for some hints.

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# Metalrod and magnetic field

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