Recent content by v54

Thanks for the diagram. I added a motor for example between orange/blue objects. If rotational velocity of orange object is -ω and ω for blue object. The rotor fixed to the orange object give a torque to it, so the motor increase the rotational velocity of orange object, and this need energy...

Just understand combination of rotational velocities and torques. No friction. If I apply a torque on orange object from blue object, this torque is apply to blue object in other direction, no ?

In the last message, I'm wrong, orange object don't move in translation. I simulated 2 rotations, with rotational velocity ω for blue object and -ω for orange object, I can see objects are turning from an external viewer (+ω and -ω). So, if I apply a torque on orange object I need energy...

If blue object turn at ω and orange object turn at -ω it's like object orange move in translation ? I drawn first image for look at details of forces and second for look at different positions in time. The green point of orange object don't turn for me, can I say orange object move in...

I take F1 = - F2 in vector for have a torque to orange object. I place F1 and I have no choice for F2. I think I need to take ω = -ω' like that velocity of each point of orange object is the same everywhere.

Hi ! 2 Objects turn at constant rotational velocity ω rd/s around axis noted "axis" on image (ω clockwise). An external system not drawn force the study to turn at ω rd/s if necessary. From blue object, forces F1 and F2 are applied to orange object. F1 = -F2 in vector. I would like to know if...