If I need to create a seperate thread, please let me know.

ProgressI've done some calcuations and worked as follows:

- I created the basic 'human' shape and the rough shapes for the structure based on the shapes I

could find for calculating mass moment of inertiaThis leaves me with inertia's per bodypart and structureparts.

then I calculated the torque required to overcome this inertia with the formula T = I .α where: T = Torque, I = inertia and α is angular acceleration.

- I then calculated the torque which was the initial subject of this thread, namely T = F.r where T = torque, F = force and r = radius from the rotation axis.

Follow-up question To give you an idea off how I'm calculating, below is an image to illustrate, top left are the basic shapes mentioned earlier, top right is the structure which needs calculation. Middle is the 'person' in front view with the CG's for each bodypart.

The 'human' is created using

average weights and average measurements found online. Not the pretiest, but it's good enough for my calculations. The CG is calculated using a program.

As for the questions:

A] Can I just make the sum of all the torque calculated to get the total torque required (both inertia and the other one) or is this too simplistic?

B] not focussing on the torque required to overcome inertia but rather on the other one (T = F.r).

Assuming I can indeed make the sum of all off the calculated torque, I end up with around 158 Nm.

In my first post my issue was understanding how torque translated in practice.

I understand the concept that if I have a 8Nm motor, this means I can lift 8N (or .8kg) at a distance off 1 meter.

At 0.1 m this would mean a force of 80N (or 8Kg).

With the above info, does it mean that the resulting calculated 158 Nm needs to be overcome by a theoretical motor of 158 Nm (in reality motor + gearing), or is this 158 N at the distance calculated from the axis meaning I can for example take a 12Nm motor with a lever of let's say 1 cm to have 1200N at 1cm?

If I'm confusing you please let me know, I've been working a long time on it so it's obvious for me but I understand it might not be as clear to you the way I'm explaining it (non-native english speaker, so please bare with me)

rgds