C Solina in Example 76 supt c An Electron Moves in A cet wieypuus Halliday, Fu o

Question

C Solina in Example 76 supt c An Electron Moves in A cet wieypuus Halliday, Fu of Physics, 10e Introductory Physics (PHYs 1303, 1304 1307, 130s) In the figure, a metal wire or mass m 274 mg can side with neglgbla treton on two herrontal parallel rals separated by distanoa d 2.52 cm. The track lies in a vertical uniferm magnetic field of magntude 42 0 mmT. At 0 s, device G is connected to the rails, producing a constant cument 567 mA in the wire and rails leven as the wire moves). Att 69.4 ms, what are the wire a) speed and (b) direction of motion? click you would lave to show work for this questions sasn Question Attempts of S used

Explanation / Answer

Magnetic force is,

F = B*i*L*sin(theta)

Here, theta = 90 deg

so, F = 0.047*0.00567*0.0252

F = 6.715*10^(-6) N

We know that,

F = m*a = m*v / t

6.715*10^(-6) = 27.4*10^(-6)*v / 0.0694

v = 1.70*10^(-2) m/s

(b)

From the right hand thumb rule,

we found the direction of force towards left.

hence the direction of motion will be towards left.

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