A 1.15 kg coppper rod rests on two horizontal rails 95 cm apart and carries a current of 53.2 A from one rail to the other. A coefficient of static friction is 0.58. Find the smallest magnetic field (not necessarily vertical) that would cause the bar to slide.

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A 1.15 kg coppper rod rests on two horizontal rails 95 cm apart and carries a current of 53.2 A from one rail to the other. A coefficient of static friction is 0.58. Find the smallest magnetic field (not necessarily vertical) that would cause the bar to slide.
For real? Besides us not doing your homework for you, this looks like an electrical engineering question. It has nothing to Electrical & Lighting (https://www.askmehelpdesk.com/electrical-lighting/) which is what this forum is for.