Question

Potential enegry of an aeroplane before take off is

Answer 1

If reference level is ground then PE of Aeroplane is 0 and if reference level is sky at some height then it is -mgh but for lower standard it is considered 0 only.
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Answer 2

Potential energy of an aeroplane before the take off will be 0 as it will be on ground ( with reference to ground)

potential energy = mgh
in this case h will be 0 se aeroplane is on the ground
so PE = 0

Hope this helps...
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