FIND Magnetic Force on a Rectangular Coil as a Function of the Length (L): Given

Question

FIND Magnetic Force on a Rectangular Coil as a Function of the Length (L): Given

and FIND Magnetic Force on a Rectangular Coil as a Function of Current (I) GIVEN

I am really confused about what equatiosn to use to find the Force for each graph since B is not provided as a term. They give the equations Fg = Fm => (delta)mg = ILBsin(theta) = ILB where (delta)m = m-m(naught), m(naught) = mass reading without any current = 0. I am assuming you find B and then plug it into the equation Fm = ILB. Am I correct in assuming this and if so how would I go about doing it?

THANKS IN ADVANCE

Current Length of wire in meters "delta"m (Kg) Force (N) 4 0.02 0.006 4 0.04 0.013 4 0.06 0.019 4 0.08 0.024 4 1.00 0.031

Explanation / Answer

you can find B in each case by applying

(delta)m * g/(current * length)

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