Let us review about rocket move

In summary, the conversation discusses the principles of Newton's 3 and conservation of momentum in relation to a rocket's movement. It is noted that if the rocket is in a rest condition at t=0, and gas is released from the back, the rocket will move forward. The topic of energy conservation is also brought up, with the understanding that in a system with no external forces, energy is conserved. However, it is questioned why this may not always be the case in the example of a rocket's movement, as chemical energy is being converted to mechanical energy.
  • #1
gema
11
0
Hello Forum,

Let us review about rocket move.The Rocket moving with 2 mechanical principe;Newton's 3 and conservation of momentum.If rocket at t=0 is in rest condition (E=0),after the gas with dm mass go out to the back from rocket ,then rocket move to the front(E=Ek1+Ek2).
Nothing external force in this system,

Energy of system is conserve, if nothing external force in the system.
But why the energy of system isn't conserve?
 
Physics news on Phys.org
  • #2


gema said:
Energy of system is conserve, if nothing external force in the system.
But why the energy of system isn't conserve?
What do you mean by 'energy is conserved'? Just because there are no external forces, doesn't mean mechanical energy (for example) is conserved. You are converting chemical energy into mechanical energy by burning the fuel. (Total energy is conserved of course.)
 

1. What is a rocket move?

A rocket move is a type of movement made by a rocket, which involves the use of propellant to create thrust and propel the rocket through the air or space.

2. How does a rocket move work?

A rocket moves by pushing the propellant out of the back of the rocket at high speeds, which creates an equal and opposite force that propels the rocket forward. This is known as Newton's Third Law of Motion.

3. What are the components of a rocket that enable it to move?

The components of a rocket that enable it to move include a propulsion system, such as an engine or motor, a fuel source, and a guidance system to control the direction of the rocket's movement.

4. What factors affect the performance of a rocket move?

The performance of a rocket move can be affected by various factors, such as the type and amount of propellant used, the design and efficiency of the propulsion system, and external factors like air resistance and gravity.

5. What advancements have been made in rocket move technology?

Over the years, there have been significant advancements in rocket move technology, including the development of more efficient and powerful engines, the use of new and advanced materials for rocket construction, and improvements in guidance and control systems.

Similar threads

Replies
9
Views
1K
  • Classical Physics
Replies
6
Views
766
  • Introductory Physics Homework Help
Replies
1
Views
809
  • Introductory Physics Homework Help
Replies
2
Views
979
Replies
18
Views
938
Replies
5
Views
517
Replies
12
Views
810
  • Introductory Physics Homework Help
Replies
1
Views
1K
  • Introductory Physics Homework Help
Replies
5
Views
1K
  • Introductory Physics Homework Help
Replies
6
Views
1K
Back
Top