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It is important because it is essential for for climbing of aircraft. There is a limit for thrust to weight ratio. When an airplane exceeds it, it cannot climb effeciently.
A thrust to weight ratio of 1:1 is good on RC planes so I'd recommend 5KG of thrust
Thrust is the force generated by an engine to propel an object forward, like an airplane. Weight is the force of gravity acting on an object, pulling it downward towards the Earth. In order for an object to fly, the thrust generated by its engines must be greater than its weight.
Payload weight.
The main factor in determining the amount of thrust a rocket requires to leave the Earth's atmosphere is the mass of the rocket. The heavier the rocket, the more thrust is needed to overcome Earth's gravity and propel it into space.
Thrust . i mean a force required to overcome the gravity of earth and which is greater than its weight.
Lift, weight, thrust and drag.
Lift equals weight and thrust equals drag.
Payload weight.
lift and thrust overcome weight and drag
As long as the thrust is more than the weight of the rocket (toy or otherwise) the rocket will accelerate. When the thrust matches the weight, the rocket will cruise. When the thrust is less then the rocket will slow.
Rockets use thrust to overcome the force of Earth's gravity.