Engineering Mechanics - DynamicsChapter 17Problem 17-57The pendulum consists of a disk of weight W1and a slender rod of weight W2. Determine thehorizontal and vertical components of reaction that the pin O exerts on the rod just as it passesthe horizontal position, at which time its angular velocity is ω.Given:W115 lb=a0.75 ft=8rads=W210 lb=b3ft=Solution:IO12W1g⎛⎝⎞⎠a2W1g⎛⎝⎞⎠ab+()2+13W2g⎛⎝⎞⎠b2+=Guessesα10rads2=Ox100 lb=Oy5lb=GivenOyW1−W2−W1g−+W2g⎛⎝⎞⎠b2−=OxW1g⎛⎝⎞⎠+2W2g⎛⎝⎞⎠b2⎛⎝⎞⎠2+=W1+W2b2⎛⎝⎞⎠+IO=OxOy⎛⎜⎜⎝
This is the end of the preview. Sign up
access the rest of the document.