Ready for liftoff

Image credit: [ISC Kosmotras](http://www.kosmotras.ru)

Image credit: ISC Kosmotras

Orbital rockets use liquid propellants, often liquid hydrogen + oxygen, to get their large mass off the ground. Burning liquid oxygen produces a tremendous amount of thrust. If the total mass of a rocket, payload, and fuel is \(2\times 10^6\) kg, what is the necessary thrust (in Newtons) to start the rocket moving from its launch platform?

Details: the acceleration of gravity is \(-9.8\text{ m/s}^2\) on the platform.

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