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## Homework Statement

There is a 1 kg (52x52x52mm) square block attached to a 200 mm long (d = 8 mm, weight = 0.03 kg) rod what is connected to an electric motor. The setup is vertical and needs to achieve about 90 rpm. So, the 1 kg square block will circle on the outer rim, connected to the motor by the rod.

The question is how strong motor has to be bought. It would be great to see the complete calculation logic because then I could use it with different sizes.

## Homework Equations

Maybe angular velocity calculations, friction loss calc, gravity calc, not sure

## The Attempt at a Solution

I am far from being able to do this calculation since coming from a non-physics are, it looks I am very underskilled.