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(Solved): The vertical bar \( A B \) has a mass of \( 150 \mathrm{~kg} \) with center o ...
The vertical bar \( A B \) has a mass of \( 150 \mathrm{~kg} \) with center of mass \( G \) midway between the ends. The bar is elevated from rest at \( \theta=0 \) by means of the parallel links of negligible mass, with a constant couple \( M=5 \mathrm{kN} \cdot \mathrm{m} \) applied to the lower link at \( C \). Determine the angular acceleration \( \alpha \) of the links as a function of \( \theta \) and find the force \( B \) in the link \( D B \) at the instant when \( \theta=30^{\circ} \).
Expert Answer
solution. The motion of the bar is seen to be curvilinear translation since the bar itself does not rotate during motion. With the circular motion of