Question

Multistage rockets are used in launching artificial satellites. Why?

Answer 1

When rocket is launched , fuel of first stage rocket is ignited which helps the rocket reach the desired height with a definite speed .Now the first stage is detached itself from the remaining rocket and the fuel of second rocket starts burning giving the desired direction to the rocket and increases the speed and height of rocket .When the fuel of second stage rocket is burnt completely , it is also separated and the fuel of last stage rocket starts burning . This will give the desired height and speed of the rocket . As desired height is attained , the body placed at the nose of rocket is projected horizontally with the desired speed and the body starts orbiting around the earth with a definite period.