11.07.2015 Views

Dinâmica

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Oyx• Combinar as relações cinemáticas com asequações do movimento para resolver em ordemàs acelerações e força de tracção no cabo:yTTTB1 =2===1 xAa2 B =12( 100kg) a A2940N - ( 300kg)2940N -aaaTTB1AB( 300kg)( 1a )2 − 2T1 = 0=2940 N −a2( 150kg) − 2( 100kg) 0A2Aa A a A= 8.40m==12a( 100kg)= 2T1A=s24.20maA= 1680 Ns2= 840 N12 - 18

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