61 c 1 j 2 km 2 r consider

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Unformatted text preview: k&m + 2 ) % r( 2 1 c J' $ 2 k&m + 2 ) % Thus the damped natural frequency is r( Thus the damped natural frequency is m+ 1 = 2!" n # ! = k m+ J r2 !d = !n 1 " # 2 = k m+ * !d = J r2 k m+ J r2 c2 " J' $ 4& m + 2 ) % r( 2 2 = r 4 ( kmr 2 + kJ ) " c 2 r 2 2( mr 2 + J ) 1.61 $ ' & ) c ) 1" & & J') $ & 2 k&m + 2 ) ) % r (( % Consider Problem 1.60 with k = 400,000 N⋅m, m = 1500 kg, J = 100 m2⋅kg, r = 25 cm, and c = 8000 N⋅m⋅s. Calculate the damping ratio and the damped...
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This note was uploaded on 06/03/2013 for the course EML 4220 taught by Professor Chen during the Spring '08 term at University of Florida.

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