Thanks for the help~! What we have is a belt drive system as it is being readied

Question

Thanks for the help~!

What we have is a belt drive system as it is being readied for service. Before the belts can start turning. They must be tensioned and in this case, the tension are the same on the both sides of each belts (i.e. they are acting as ideal pulleys). If point D acts as a thrust bearing and point A is a regular journal bearing, what are the reactions at A and D? You may assure that F = 4.000 N and P = 1.500N. The distance, r1 - r2 and r3 are 0.5 m. 0.4 m, and 0.25 m, respectively. The drive at B has a diameter of diameter of 0.1 m and the drive at C has a diameter of 0.1 m and the drive at C has a diameter of 0.22 m.

Explanation / Answer

D only support axial load. Dy and Dz=0;

so, Az=2*F=2000; Ay=-2*P=-3000N; (equating forces in Y and Z direction)

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