Calculate Shaft Radius for Coupling System, 100rpm Rotate

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To calculate the shaft radius for a coupling system rotating a prespex cylinder at 100 rpm, the diameter of the cylinder is 6 inches and its width is 1 inch. The weight of the material being rotated is 10 grams of sand, with a bulk density of 3000 kg/m^3. The discussion raises concerns about the clarity of the problem, particularly regarding constraints such as power, stress, and material properties. Additionally, the orientation of the cylinder (horizontal or vertical) is crucial for understanding sand distribution and whether the sand will be tumbled. Initial calculations should focus on determining the volume of both the cylinder and the sand.
neyganesh
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Pls help me calculate the shaft radius of a coupling system that's goin to rotate an prespex cylindrical at 100 rpm by a motor... the dia of cylinder is 6 in and its width is 1 in. the material to be rotated is 10 gm s of sand... bulk density if the sand is 3000 kg per m^3...
 
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Is this a homework problem? Is seems somewhat ill defined, particularly with respect to constraints, e.g. power, stress, materials, . . . .

What is the orientation of the cylinder - horizontal or vertical? That will make difference regarding the distribution of the sand. Is the sand to be tumbled, as in a tumbler/blender.

For starters calculate the volume of the cylinder and the volume of sand.
 

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