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Old 09-24-2003 | 09:02 AM
  #4  
juneboy
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From: Nashville, TN,
Default RE: Physics problem

What I meant by lift is this. The lift needed to lift the 400 lb object at takeoff. The lift needed to maintain an altitude of 20 ft. travling at 20 mph. and the lift needed to land. I should have been more clear.