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A uniform horizontal wire with a linear mass density of 0.48 g/m carries a 1.9 A current. It is placed in a constant magnetic field, with a strength of 3.5 10-3 T, that is horizontal and perpendicular to the wire. Neglect the magnetic field of the Earth.
(a) As the wire moves upward starting from rest, what is its acceleration?


  • physics -

    Net force F = F(Ampere) –m•g = I•L•B•sinα –d•L.
    (sinα = 1, d =0.48•10^-3 kg/m)
    F = m•a =d•L•a
    I•L•B –d•L = d•L•a.
    a =(I •B) /d – 1.

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