Final answer:
The provided details do not align with the initial question about the trim system of a multi-engine airplane, as they discuss different physics problems unrelated to the original inquiry about aircraft operability and lateral control force.
Step-by-step explanation:
The subject of the question pertains to the trim system of a multi-engine airplane, where it is required to maintain longitudinal and directional trim even when the critical engine is inoperative. However, the detailed information provided seems to refer to a variety of physics problems involving force, mass, and acceleration, rather than directly answering the question about the maximum lateral control force permissible in an airplane's trim system for certification purposes. This indicates potential confusion in the question details, as the answer requested should relate to aviation regulations concerning aircraft operability during engine failure. Without specific information on the regulatory requirements, one cannot confidently provide the number of newtons of lateral control force allowable under such conditions.
The trim system of a multi-engine airplane ensures that the aircraft maintains longitudinal and directional trim even when the critical engine is inoperative and the propeller is in the feathered min drag position. The trim system is designed to balance the forces and moments on the airplane to prevent any uncontrollable tendencies. In this specific case, the lateral control force should not exceed a certain limit to maintain trim.