lamo air speed =0 of the needed 150. no take off. period.
easy one (course i've taken hang gliding lessons)
assume the needed Air wing speed for take off is 150 .
the aircraft engine sends thrust backwards , this pushes the air plane forwards.
as the plane starts to move forward (1 mph) the weight of the plane still bares down on the tires, the friction between the conveyor belt and the tires is great or than the friction of the wheel bearing (assuming no brakes are applied) the wheel rotates . the rotation of the wheel triggers the conveyor belt to move backwards at 1mph. thrust is still applied so the plane again moves forward and repeat.
with a jet engine there is not a great deal of air flow Over the wings by the jet engine alone, wings produce no lift . you've just created a very Inificient fan.
If its a propeller in front of the wings you will have air flow over the wings and create lift and you will take off with a ground speed of zero if you can manage to get the air moving fast enough around your wings.
so it should depend on engine placement.
also by exact definition of the question. if you locked your tires up, and the trust of your engine was enough to overcome the friction of the tires(lockedup) you'de slide them (not rotate) and the convyer belt wouldn't start up...
(please at least post back the correct answer for the thread is locked )