The two conducting rails in the drawing are tilted upwards s

The two conducting rails in the drawing are tilted upwards so they each make an angle of 30.0

Because there is no acceleration, the force (F=BIl) must cancel the effect of gravity.
The bar is moving at 30deg to the horizontal so
F = BIl cos30 = mg sin30
I = mg/Bl x sin30/cos30
Take g=9.8 m/s^2
I = (0.2x9.8)/(0.051x1.6) x tan30 = 24.01x tan30 = 13.8677 amp