Engineering Mechanics - DynamicsChapter 18Solution:IAW1g14a2⎛⎝⎞⎠2b212+⎡⎢⎣⎤⎥⎦W1glb2+⎛⎝⎞⎠2+W2g⎛⎝⎞⎠l23+=dW1lb2+⎛⎝⎞⎠W2l2⎛⎝⎞⎠+W1W2+=Guessθf1 deg=Given12IAω02W1W2+()dcos0−W1W2+−dcosf=fFindf=f39.3 deg=Problem 18-47The compound disk pulley consists of a hub and attached outer rim. Ifit has mass mPand radius of gyration kG, determine the speed of blockAafter Adescends distance dfrom rest. Blocks Aand Beach have amass mb. Neglect the mass of the cords.
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