Problem $14\mathrm{.}035-$ The double$-$excited electromechanical system $-$ DEPENDENT MULTI$-$PART PROBLEM $-$ ASSIGN ALL THE PARTS

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The double$-$excited electromechanical system shown in the given figure moves horizontally. Assume that resistance, magnetic leakage, and fringing are negligible; the permeability of the core is very large; and the cross$-$section of the structure is w $$ w$.$

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NOTE: This is a multi$-$part question. Once an answer is submitted, you will be unable to return to this part.

R$=$x$0$w$22$lg$0$w$($w$+$x$)$

R$=2$x$0$w$2$lg$0$w$($w$+$x$)$

R$=$x$0$w$+$lg$0($w$$x$)$

R$=$x$0$w$2+$lg$0$w$($w$$x$)$