Question

Which physical principle is involved in the working of jet aeroplanes?

Answer 1

Hint : In order to explain the working principle of a jet aeroplane, first of all you must analyze all of Newton’s laws of motion. From that analysis you will find out the physical principle involved in the working of jet airplanes is based on Newton's third law. Thus apply Newton’s third law of motion here.

Complete step-by-step solution:
The physical principle involved in the working of jet aeroplanes is based on Newton's third law. That is, according to Newton’s third law, that for every action there will be a corresponding reaction. This principle works for the working of a jet aeroplane. When the exhaust gas in the jet aeroplane ignites, the plane needs to move forward. In simpler words we can explain it as the action here is the force of exhaust gas moving backwards and this action is equal to the force exerted by the plane to move forward which is called the reaction.

Note: The other instance where we find the application of Newton’s third law is when we jump our legs and apply a force on the ground and at the same time the ground applies an equal and opposite force into the air called the reaction.