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Calculate Torque Required

Engineering Asked by lalala on November 29, 2020

I am working on a school project that requires me to build a machine. I have designed the machine but I am stuck at torque calculation. The problem goes like this, the machine supposes to rotate a stack of trays (5 trays stacking up vertically) at a constant speed.

Below is the information:

Mass of each tray: 8 kg

Tray Radius: 0.3 m

Moment of inertia of each tray: 0.333 kg m^2

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Let’s just say the friction is very small and can be neglected. The rotational speed should reach 1200 rev/min in 5 seconds. How do I calculate the torque required to rotate the stack of trays?

Any help would be appreciated!

One Answer

If we follow your assumption, ignoring friction.

We calculate for a Torque to produce an angular acceleration of 1200/5 per second.

$$T=alpha L = 1200/5*2pi*l= 753.98*0.333*5*9.8=12,302.7Nm $$

Answered by kamran on November 29, 2020

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