Lift-Off

Hello Kerbalnauts,

We are going to 'Launch' The Rocket Science tab off with the first step to making a good rocket.

To start getting off the ground we will need to perform apply Newton's 2nd law(Force Balance) on the rocket. To do this we will need to examine what forces exist:

From these forces we can see that the force of drag will be zero at lift off because the Velocity(V) is zero, and that the only forces involved in keeping our rockets from taking off are the Gravity and Thrust.

Conclusion:
The Force of Thrust(Ft) must be larger then the total mass(m) of the Rocket times the gravity(g) of the current planet (g = 9.81 on Kerbin).