If you hang a plumb bob in the
airplane, and start a climb, the bob will shift aft. If you're in level
flight and slow down, it'll shift forward. If you combine the two
correctly, it'll stay pointing at the same spot on the floor.

.... and the string will break.

Or at least will be under more stress. There's more than the position
of the plumb bob to the total net force.

Jose
--
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