text: g+?)x(Z) 
  
  J-2 WY2 a 
  -= - 
  ) WI 
  J-1 ( 
  (ut 1eaJt this effect because weight will 
  alter the net accelerating force) 
  
  This result approximates the e5ect of gross 
  weight on takeoff distance for airplanes with 
  relatively high 
  In 
  effect, the takeoff distance will vary at least 
  as the square of the gross weight. For ex- 
  ample, a 10 percent increase ,in takeoff gross 
  weight would cause: 
  
  thrust-to-weight  ratios. 
  
  a 5 percent increase in takeoff velocity 
  at least a, 9 percent decrease in acceleration 
  at least a 21 percent increase in takeoff 
  distance 