Why the torque output in the rack and pinion actuator during air stroke (when springs are being compressed) is less than the torque generated by the spring return stoke? As per Hooke's law applied force on the spring should be equal to the restoring force of the spring so the torques should be the same! F=kx should be equal to F=-kx. Why this theory is not valid in spring return Rack and Pinion actuators? Am I missing something here?
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