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 has a constant clockwise speed of 1.0 rev every 3.7 s, determine the acceleration ap (positive if up, negative if down) of the pump rod D when the beam and the crank OA are both in the horizontal position shown.

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 has a constant clockwise speed of 1.0 rev every 3.7 s, determine the acceleration ap (positive if up, negative if down) of the pump rod D when the beam and the crank OA are both in the horizontal position shown.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

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 has a constant clockwise speed
of 1.0 rev every 3.7 s, determine the acceleration ap (positive if up, negative if down) of the pump rod D when the beam and the crank
OA are both in the horizontal position shown.
3.2 m
3.25 m
E
0.91 m
1.67 m
0.5
m
Answer: ap =
i
0.364
m/s2

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