@frlobo Torque is a cross product between an applied force, and some radius vector. As such, the same torque can be accomplished with different combinations of force and radius.

In the example I gave, we are seeking to determine the critical torque required to complete the pod-pressing action by using the handle, in which case we are computing our estimate by considering the radius of the handle from the axis it rotates when you push it.

If you rotate the axle directly with some form of electromagnetically propelled device, like a motor, then your acting radius is much smaller, and your effective force will be linearly greater in order to produce that same torque.

In practice, it doesnāt matter, as long as the motor can supply the right torque, and you do not construct too elaborate of an intermediate simple machine that dissipates all that work.

I am not recommending a counter-weight as a mechanism to power this motion, I am recommending it as a trivially simple way to measure how strong of a motor you would need to buy to do the same, directly at the axle. Whatever torque gravity tugging on a string applied at the radius of the handle generates, thatās the same torque youād need at the axle, and the same torque youād need using a lever twice as big!