Piece of Cement in a Rotating Cement Mixer

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A piece of cement in a rotating cement mixer cannot travel at constant speed due to the forces acting on it. The gravity vector points downward while a normal force acts towards the center of the mixer. Additional forces, such as friction with the walls, are necessary to maintain motion and counteract gravity. The Coriolis effect complicates the resolution of these forces as the cement moves from the center to the perimeter. Ultimately, without friction, the cement would remain at rest as the mixer rotates around it.
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Is it possible for a piece of cement in a rotating cement mixer to travel at constant speed?

If we graph a cement mixer (circle) on the Cartesian plane with a radius of 1, then at (1, 0), there would be a gravity vector pointing down and a normal force pointing towards (0, 0). Are there any other vectors that can cause the net force to point towards the centre of the cement mixer (to cancel out the gravity vector)?
 
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The problem of resolving the forces in a cement mixer is complicated surely by the coriolis effect through the medium from the centre to the perimeter
 
tony_physic said:
The problem of resolving the forces in a cement mixer is complicated surely by the coriolis effect through the medium from the centre to the perimeter

I'm referring to a free body diagram relative to the ground.
 
tahayassen said:
Is it possible for a piece of cement in a rotating cement mixer to travel at constant speed?

If we graph a cement mixer (circle) on the Cartesian plane with a radius of 1, then at (1, 0), there would be a gravity vector pointing down and a normal force pointing towards (0, 0). Are there any other vectors that can cause the net force to point towards the centre of the cement mixer (to cancel out the gravity vector)?

Friction with the wall. Without friction the cement will just be at rest and the mixer will rotate nicely around it.
 

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