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As a rocket travels upwards the engine thrust remains constant but the mass of the rocket decreases Why?
As the rocket travels upwards, it burns fuel, which causes its mass to decrease. Since the engine thrust remains constant, the rocket can accelerate faster due to the decrease in mass, following Newton's second law (F=ma). This phenomenon is known as the rocket equation and is essential for space travel.
What is the centre of mass on a rocket?
The center of mass on a rocket is the point where the mass of the rocket is considered to be concentrated. It is the point at which the rocket's weight can be assumed to act. The location of the center of mass is important for stability and control of the rocket during flight.
On what factors acceleration of rocket depends?
The acceleration of a rocket depends on the thrust produced by the engine and the mass of the rocket. A higher thrust will result in greater acceleration, while a higher mass will decrease acceleration. Air resistance can also affect acceleration, with lower air resistance allowing for greater acceleration.
A small rocket is powered upward on lift off by an engine thrust of 12000N. If the result upward acceleration is 6.4 ms2 what is the mass of the rocket?
Using Newton's second law (F = ma), we can rearrange the equation to find the mass of the rocket. The upward force is equal to the engine thrust, which is 12000N. The acceleration is 6.4 m/s^2. So, mass = force/acceleration = 12000N / 6.4 m/s^2 = 1875 kg.
What force propels a rocket when it is in a vacuum?
In a vacuum, a rocket is propelled by the force generated from the expulsion of mass through the rocket engine's nozzle. This action is governed by Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. As the rocket expels mass at high velocity, it experiences a reactive force in the opposite direction, propelling it forward.
How do you determine where the center of the mass of a a rocket?
To determine the center of mass of a rocket, you calculate the mass of each component of the rocket and its distance from a reference point (such as the base of the rocket). Then, you find the average position of all these masses to identify the center of mass. Balancing the rocket at this point helps ensure stable flight.
What is the mass of a model rocket?
Model rockets can use anything from 1/4A to G engines.Amateur rockets can use up to N engines.Professional rockets have no limit.Each successive engine letter has twice the power of the previous. Assuming Professional rockets start with O engines, the smallest Professional rocket engine has 256 times the power of the largest Model rocket engine. Most will of course be much larger.
What can you increase rocket stability?
You can increase rocket stability by using fins to create aerodynamic forces that keep the rocket pointing in the right direction, ensuring the center of mass is located in front of the center of pressure, and using a gimbaled engine or thrust vectoring to control the rocket's direction.
What describes the amount of thrust created per unit of mass of an engine and fuel?
Specific impulse is the term that describes the amount of thrust created per unit of mass of an engine and fuel. It is measured in seconds and is a crucial factor in determining the efficiency and performance of a rocket engine.
How is the mass of the rocket change when it lits of?
The mass of the rocket decreases when it lifts off due to the expulsion of propellant (fuel) through the engines as exhaust gases. This process generates thrust, propelling the rocket upward while reducing its overall mass as fuel is consumed.
What is the Center Of Mass and how does it affect rocket trajectory and performance?
The center of mass is the point at which the mass of an object is evenly distributed in all directions. In rocketry, the position of the center of mass affects the stability and control of the rocket. A rocket with its center of mass too far forward may be unstable, while a rocket with its center of mass too far back may have difficulty maintaining a desired trajectory. By carefully considering the center of mass during rocket design, engineers can optimize the rocket's performance and trajectory.
How do you increase rocket speed?
To increase rocket speed, you can add more propellant to increase thrust, reduce the rocket's mass by shedding unnecessary weight, or improve aerodynamics to minimize drag. Additionally, optimizing the rocket's trajectory and using efficient engine designs can also help increase speed.
