1. Before being launched into the space, rockets will be held down by the clamps on the launching pad initially.
2. Manned or unmanned satellites will be placed at the top of the rocket.
3. When the fuel in the rocket is burnt, it will produce an upward thrust. There will be a point at which the upward thrust will be greater than the weight of the satellite.
4. At that point, the clamp will be removed by remote control and the rocket will move upwards.
5. According to Newton’s third law, for every action there is an equal and opposite reaction.
6. As the gas is released downward, the rocket will move upward.
7. To place a satellite in a particular orbit, a satellite must be raised to the desired height and given the correct speed and direction by the launching rocket.
8. If this high velocity is given to the rocket at the surface of the Earth, the rocket will be burnt due to air friction.
9. Moreover, such high velocities cannot be developed by a single rocket, So. multistage rockets are used.
