Physics Exam > Physics Videos > Mechanics & General Properties of Matter > System of Variable Mass: Rocket Propulsion
System of Variable Mass: Rocket Propulsion Video Lecture | Mechanics & General Properties of Matter - Physics
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FAQs on System of Variable Mass: Rocket Propulsion Video Lecture - Mechanics & General Properties of Matter - Physics
| 1. What is a variable mass system in rocket propulsion? |  |
Ans. In a variable mass system, the mass of the rocket changes during its operation, mainly due to the expulsion of exhaust gases. Rocket propulsion in such systems is governed by the principle of conservation of momentum, where the change in mass results in a change in velocity.
| 2. How does a variable mass system work in rocket propulsion? | |
Ans. In a variable mass system, a rocket propels itself by expelling mass in the form of exhaust gases at high speeds. According to Newton's third law of motion, for every action, there is an equal and opposite reaction. As the exhaust gases are expelled with high velocity, the rocket experiences an opposite and equal force, propelling it forward.
| 3. What are the main components of a variable mass rocket propulsion system? | |
Ans. The main components of a variable mass rocket propulsion system include a propellant, combustion chamber, nozzle, and exhaust gases. The propellant undergoes combustion in the combustion chamber, generating high-pressure and high-temperature gases. These gases are then expelled through the nozzle, providing the rocket with thrust.
| 4. How does the conservation of momentum apply to a variable mass rocket propulsion system? | |
Ans. Conservation of momentum states that the total momentum of an isolated system remains constant if no external forces act upon it. In a variable mass rocket propulsion system, the expulsion of exhaust gases with high velocity results in a change in momentum. As the mass decreases, the velocity of the rocket increases, maintaining the overall momentum of the system.
| 5. What are the advantages of using a variable mass system in rocket propulsion? | |
Ans. The advantages of using a variable mass system in rocket propulsion include higher efficiency and greater maneuverability. By expelling mass at high velocities, these systems can achieve higher speeds and reach farther distances. Additionally, variable mass systems allow for finer control over the rocket's trajectory, enabling more precise maneuvers and adjustments during flight.
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Dec 22, 2024 Last updated |
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