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"A rod with length L , mass m and resistance R slides without friction down parallel conducting rail of
negligible resistance . the rails are connected together at bottom, forming a conducting loop with the rod
the plain of the loop makes angle Z wih horizontal , a uniform vertical magnetic field B exist
througth the region perpendicular to the plane . show that the rod acquire a velocity whose magnetude

v = (mgR sinZ)/square of(BLcosZ)
show that the rate at which the internal energy of the rod is increasing is equal to the rate at which
the rod is losing gravitational potential energy

  • physics -

    the ans is totally wrong. v should depend on time t. there is no t in v = (mgR sinZ)/square of(BLcosZ) .

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