A boeing 747 has the following characterisitics. W = 636,600 lbs Sw(surface area of wing)= 5500 ft2 c(chord length) = 27.3 ft Xac = 0.25c Cl,alphaw(lift curve slope of wing) 5.7 (1/rad). This is approximately equal to lift curve slope of tail. Cm,alphaf(pitching moment slope for fuselage)= 0.2 (1/rad) ARw(winfg aspect ratio)= 7.0 n(tail efficiency) = 1.0 lt(distance from ac of the tail to cg of the plane)= 130 ft Xnp/c(stick fixed neutral point)=0.799 St(surface area of the tail)= 1400 ft2 This Boeing 747 has an unloaded weight of 636,600 lbs with a center of gravity located at the quarter chord position, . The aircraft is carrying an M1 Abrams tank weighing 74,000 lbs. The tank is initially located at the unloaded aircraft's center of gravity. During take-off, the tank become unsecured and slides 100ft aft of the original aircraft cg. Compute the location of the new c.g. in feet.

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