At my education we are busy with creating a small device that can spread thaw grains. Our plan is as follows: The particles should be spread by launching them from a fast rotating disk. The particles are dosed and dropped on the disk. Now we have to do calculations on this. The folowing information is given:
- The amount of particles is 1 cm3
- Mass of 1 cm3 of particles is 0.0027 kg.
- Radius of the disk is 2.5 cm.
- Height of disk above ground is 0.1 m.
What we want to know:
How fast should the disk rotate to launch the particles 0.3 meter away (horizontally).
What I tried:
- Each particle can have its own radius to the centerpoint of the disk. But of course I can take an average.
- I tried to calculate the amount of kinetic energy needed to move the 1 cm3 of particles 0.3 meter away. At a starting height of 0.1 m. But I think I’m wrong.