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April 16, 2014

Homework Help: physics

Posted by Jimmy on Monday, August 20, 2012 at 7:36pm.

A 0.330 kg bar is placed on a pair of frictionless rails separated by a distance of 1.60 m and located on an inclined plane that makes an angle of 29.0 with respect to the ground. The total resistance of the circuit remains at a constant 1.8 Ω and a uniform magnetic field of magnitude 0.510 T is directed downward, perpendicular to the ground, over the entire region through which the bar moves.

a) Once the bar reaches its terminal velocity, what must the magnitude of the
magnetic force be?

b) Once the bar reaches its terminal velocity, what is the magnitude of the induced current through the circuit?

c)Once the bar reaches its terminal velocity, what is the magnitude of the induced emf through the circuit?

d)What is the terminal velocity of the bar?

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