Magnetic Force Between Parallel Currents Video Lessons

Concept

# Problem: A long, straight wire carrying a 1.5 kA current is securely anchored at both ends. Another straight, 2m wire is anchored to a 15 kg block, with the two wires parallel and 5 cm apart. If the coefficient of static friction between the block and the ground is 0.5, what magnitude and direction of current needs to run through the second wire to get the block moving? If μk = 0.3, what would the acceleration of the block be once it started moving?

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###### Problem Details

A long, straight wire carrying a 1.5 kA current is securely anchored at both ends. Another straight, 2m wire is anchored to a 15 kg block, with the two wires parallel and 5 cm apart. If the coefficient of static friction between the block and the ground is 0.5, what magnitude and direction of current needs to run through the second wire to get the block moving? If μ= 0.3, what would the acceleration of the block be once it started moving?