A rod of m = 0.15 kg and L = 0.15 m is on a ramp of two parallel rails with angle = 42 with respect to the horizontal. The current on the rod is I = 3.7 A, pointing into the screen as shown. A uniform magnetic field B = 0.35 T which points upward is applied in the region. The rod is initially at rest. Ignore the friction on the rails.

10%Part (a)Express the magnitude of the magnetic force in terms ofL,IandB. 10%Part (b)Calculate the numerical value of the magnitude of the magnetic force in N. 10%Part (c)Which direction is the magnetic force? 10%Part (d)Express the component of the magnetic force parallel to the ramp in terms ofF_Band. 10%Part (e)Express the component of the weight parallel to the ramp in terms ofm,gand. Take up the ramp to be positive. 10%Part (f)Calculate the numerical value of the net forceF_nparallel to the ramp, assuming the positive direction is up the ramp in N. 10%Part (g)Express the acceleration along the ramp in terms of theF_nandm. 10%Part (h)Calculate the numerical value ofain m/s². 10%Part (i)Ifais positive, which direction does the rod go?

10%Part (j)Ifais negative, which direction does the rod go?

Up the ramp.

Down the ramp.