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Module 2. Physics

The centre of gravity of an aircraft is adjusted by two weights, 10 kg and 5 ckg plaed 4m and 2 m aft of the c of g. To what position must a 20 kg weight be added to balance the c of g?

  • 2.5m.
  • 1.5m.
  • 3.0m.

AndreaFrasconi asking:

Why

Community Comments (3)

R
redwalt Posts: 2 25.03.2023 / 20:45
Because (10×4)+(5×2) = 20×2.5
R
redwalt Posts: 2 25.03.2023 / 21:07
Actually it was (10×9.81×4)+(5×9.81×2) = 20×9.81×2.5 , but it works either way
M
mano Posts: 3 11.04.2024 / 07:58
Weight arm momentum
10kg 4m 40
5kg 2m 10

Total aft 50 then
20kg 2.5m 50


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