Thank you,
But what I am trying to understand is, what input force is necessary to maintain momentum, once optimum momentum is acquired. In other words, if a flywheel of 18" dia., rotates at 1800 rpm's, x momentum will be achieved, therefore x force is required to start rotation, x force is required to develop momentum and x force is needed to maintain momentum and that is what I am trying to understand. Is there a solution that allows one to find this necessary input force.
again, thank you,