1. A metal bar of mass m slides frictional on two parallel conducting rails a distanced 1 apart shown in figure. A resistor R is connected across the rails and a uniform magnetic field B, pointing into the page, fills the entire region. a) If the bar moves to the right at speed v, what is the current in the resistor? In what direction does it flow? b) What is the magnetic force on the bar? In what direction? c) If the bar starts out with speed V, at time t=0, and is left to slide, what is its speed at a later time t?
1. A metal bar of mass m slides frictional on two parallel conducting rails a distanced 1 apart shown in figure. A resistor R is connected across the rails and a uniform magnetic field B, pointing into the page, fills the entire region. a) If the bar moves to the right at speed v, what is the current in the resistor? In what direction does it flow? b) What is the magnetic force on the bar? In what direction? c) If the bar starts out with speed V, at time t=0, and is left to slide, what is its speed at a later time t?
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Transcribed Image Text:1. A metal bar of mass m slides frictional on two parallel conducting rails a distanced 1 apart shown in
figure. A resistor R is connected across the rails and a uniform magnetic field B, pointing into the
page, fills the entire region.
a) If the bar moves to the right at speed v, what is the current in the resistor? In what direction does
it flow?
b) What is the magnetic force on the bar? In what direction?
c) If the bar starts out with speed V, at time t=0, and is left to slide, what is its speed at a later time
1?
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