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Darthturkey
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Homework Statement
Number of wraps of coil on magnetic moment in field: 100 - N_c
Number of wraps of coil on Helmholtz coil: 140 - N_h
Current through magnetic moment: .796A - I_c
Area of magnetic moment: .37m - A_c
Radius of Helmholtz coil: .1635m - R_h
Current through Helmholtz coil to attain equilibrium on balance: 1.32, 2.61,3.91 corresponding to gravitational torques caused by counterweights that are .255m away, .0001g,.0002g,.0003g
Homework Equations
Bh=(8u_0*N_h*I_h)/(5^(3/2) * R_h)
as well as T_m = B_h * N_c*I*A_c
The Attempt at a Solution
I calculated the three torques both gravitational as well as magnetic based on the formulas provided above. Each time I received an answer that was a magnitude of 100 apart. Based on my thinking the T_g and T_m should be equal as the magnetic torque should balance out the gravitational torque. I have checked to make sure all of my units are in SI and I still cannot determine why I am not getting the calculations that I should. I also cannot make heads or tails of how the Area of the magnetic moment within the field should have a vector and if it does, how to describe its orientation in space.