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<p><img class="mceBlock" src="https://s3.amazonaws.com/answer-board-image/" border="0" alt="uploaded image" /><img class="mceBlock" src="https://s3.amazonaws.com/answer-board-image/" border="0" alt="uploaded image" />An oil pumping rig is shown in the figure. The flexible pump rod D is fastened to the sector at E and is always vertical as it enters the fitting below D. The link AB causes the beam BCE to oscillate as the weighted crank OA revolves. If OA revolves. If OA has a constant clockwise speed of 1 rev every 3 seconds, determine the acceleration of the pump rod D when the beam and the crank OA are both in the horizontal position shown. <span><strong>Solve using i,j and k vector notation.</strong></span></p>

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