Given: Gross Weight = 300,000 pounds
Average Drag = 15,000 pounds
Average Friction Force = 3,000 pounds
Average Thrust = 90,000 pounds
Lift Off Speed = 140 Knots True Airspeed
What is the Potential Energy (ft-lb) of the aircraft after climbing out to 10,000 ft with the new weight at 290,000 lb?