How are torques computed about an axis when the axis (and the attached body) are both accelerating at the same rate? For example, if a car is in free fall with the doors open (with the rear end of the car pointing towards the ground) will the doors shut themselves due to torque? Or, is the torque zero because the axis and door(s) are moving uniformly? Also, in a more general sense, if several objects are in the same accelerating reference frame, can a "pseudo" form of Newton's laws (adjusted for the fictitious forces) hold for all objects in the frame? This isn't homework, just a curiosity.