The parallel-link mechanism ABCD is used to transport a component I between manufacturing processes at stations E, F, and G by picking it up at a station when θ = 0 and depositing it at the next station when θ = 180°. Knowing that member BC remains horizontal throughout its motion and that links AB and CD rotate at a constant rate in a vertical plane in such a way that v B = 2.2 ft/s, determine ( a ) the minimum value of the coefficient of static friction between the component and BC if the component is not to slide on BC while being transferred, ( b ) the values of θ for which sliding is impending. Fig. P12.62
The parallel-link mechanism ABCD is used to transport a component I between manufacturing processes at stations E, F, and G by picking it up at a station when θ = 0 and depositing it at the next station when θ = 180°. Knowing that member BC remains horizontal throughout its motion and that links AB and CD rotate at a constant rate in a vertical plane in such a way that v B = 2.2 ft/s, determine ( a ) the minimum value of the coefficient of static friction between the component and BC if the component is not to slide on BC while being transferred, ( b ) the values of θ for which sliding is impending. Fig. P12.62
Solution Summary: The author explains how to find the coefficient of static friction between the component and BC.
The parallel-link mechanismABCD is used to transport a component I between manufacturing processes at stations E, F, and G by picking it up at a station when θ = 0 and depositing it at the next station when θ = 180°. Knowing that member BC remains horizontal throughout its motion and that links AB and CD rotate at a constant rate in a vertical plane in such a way that vB = 2.2 ft/s, determine (a) the minimum value of the coefficient of static friction between the component and BC if the component is not to slide on BC while being transferred, (b) the values of θ for which sliding is impending.
Fig. P12.62
Branch of science that deals with the stationary and moving bodies under the influence of forces.
Three cables are pulling on a ring located at the origin, as shown in the diagram below. FA is 200 N in magnitude with a transverse angle of 30° and an azimuth angle of 140°. FB is 240 N in magnitude with coordinate direction angles α = 135° and β = 45°. Determine the magnitude and direction of FC so that the resultant of all 3 force vectors lies on the z-axis and has a magnitude of 300 N. Specify the direction of FC using its coordinate direction angles.
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