Question

Platform D rotates with an angular speed determined by motor M1, as shown in the figure. Attached to the platform is the drive M2 that rotates the smooth rod pa around the horizontal axis p in some particular way. Rod pa and verticals pb and ac are all on the same plane. A "bead" of mass m can slide freely along the rod, under the action of gravity. Assuming that α and θ are known functions of time, the system has a degree of freedom. Taking r as the coordinate, state the equation of motion and find the generalized force Fr.

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Answer 1

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