Question

Explain the principle on which the launching of a rocket is based

Answer 1

Answer:

The launching of rocket is based on the principle of " Law of  Conservation of Momentum".

Explanation:

"Newton's Third Law of Motion"

The "Newton's Third Law of Motion" is the foundation of the rocket propulsion theory. It asserts that "there is always an equal and opposite reaction to every action."

Working principle of rocket:

• When a rocket is used, the engine releases hot, burning gases downward.
• These gases give the rocket an equal-and-opposite reaction force that pulls it higher.
• A rocket is propelled in this manner.

Law of conservation of momentum

• According to the conservation of momentum principle, if two bodies contact or separate, the entire amount of momentum they had before the collision or separation is equal to the total amount of momentum they have.
• Since the rocket's gases and the rocket itself are stationary at launch, their combined momentum is zero.
• When the gases begin to burn, the rocket gains momentum that is equal to and in the opposite direction of that of the gases.
• Their overall momentum is therefore zero.

#SPJ2

Answer 2

Answer:

Law of  Conservation of Momentum.

Explanation:

1. "Newton's Third Law of Motion"

The "Newton's Third Law of Motion" is the basis of the rocket propulsion theory. The third law states that states that "there is always an equal and opposite reaction to every action."

Working principle of rocket:

• When a rocket is launched, the engine releases hot, propellant burning gases downward.
• These gases give the rocket an equal-and-opposite reaction force or thrust that is greater than the force of gravity.
• A rocket is propelled in this manner.

Law of conservation of momentum

• According to the law of  conservation of linear momentum principle, if two bodies collide and separate, the total amount of net momentum that they had before the collision and after the separation is equal to the total amount of momentum they have.
• Since the rocket's propellants and the rocket itself are at stationary position during launch, their combined momentum is zero.
• When the propellant gases begin to burn, the rocket gains rapid momentum that is equal to and in direction that is opposite to that of the gases.
• Their overall momentum is therefore zero.

#SPJ2