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alright to clear the air. there seems to be many different answers to this question. it all depends on how you look at the problem.

since we are not told of any form of friction we are to ACT AS IF IT DOES NOT EXIST

therefore what we have are 2 forces, a force a on the plane which is in the positive direction and a force b in the negative direction on the conveyor section under the plane.

since there is no friciton in the wheels nothing is transfered from the conveyor to the plane.

it can take off becuase the plane moves freely fromt eh conveyor. the conveyor has no effect on the plane whatsoever


yes i had it wrong before, and yes this is the right answer i called up a physics professor of 25 years to confirm my new suspicsions