This depends on the weight of the rocket, weight being the mass of the rocket multiplied by earth's gravitational pull.
To take off, the rocket needs to exert force larger than the weight, and for...
First you add a good arm, then clasp the ear. Push back the head with the other arm and pull with the other until you hear a rip. Twist and pull off. And finally add salt for good measure. lol O_o...