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Is the critical velocity equal to orbital velocity of satellite?
Wiki User
∙ 12y ago
Balance of force of gravity by centripetal force
Yes, for any given orbital radius (r) only one velocity will give stable orbit, this is called the critical velocity.
Pick your orbital radius and satellite mass (m)
Use Gmm / r2 to calculate gravitational force (f),
then find velocity from : v = sq root ( (r * f ) / m)
Wiki User
∙ 12y ago
No, the critical velocity is the minimum velocity needed for an object to break free from the gravitational pull of a celestial body. The orbital velocity of a satellite is the velocity required to maintain a stable orbit around the celestial body without falling back to the surface.
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What is Velocity of projection of satellite?
The velocity of projection of a satellite refers to the initial velocity at which the satellite is launched into space. This velocity is crucial in determining the satellite's trajectory and orbit around the Earth or other celestial bodies. The velocity of projection is typically calculated based on the desired orbit and mission objectives of the satellite.
What is the minimum velocity needed to place something into orbit?
The minimum velocity needed to place something into orbit around Earth is called the orbital velocity. For low Earth orbit (LEO), which is around 200-2,000 kilometers above Earth's surface, the orbital velocity is approximately 7.8 km/s (17,500 mph). This velocity allows the object to counterbalance the gravitational pull so it can stay in orbit.
What does a planet in an elliptical orbit need to do to sweep out equal areas in equal amounts of time?
A planet in an elliptical orbit needs to move faster when it is closer to the focus of its orbit and slower when it is farther away. This ensures that it covers equal areas in equal amounts of time as it sweeps across different parts of its orbit.
State at which the moon's orbital and rotational periods are equal?
Synchronous rotation occurs when the moon's orbital period (the time it takes to orbit the Earth) and rotational period (the time it takes to rotate on its axis) are equal. This means that the same side of the moon always faces the Earth.
If a body falls freely from infinity then it will be striking the earth with what velocity?
The body will be striking the Earth with a velocity equal to its escape velocity, which is around 11.2 km/s. At this velocity, the body will have enough kinetic energy to overcome the gravitational pull of the Earth and reach the surface.
What is the effect on the orbital velocity of the sattelite if its orbital radius is doubled?
If the orbital radius of a satellite is doubled, its orbital velocity would decrease. This is because the gravitational force between the satellite and the planet it is orbiting would be weaker at a greater distance, requiring a lower velocity to maintain orbit.
What is the difference between escape velocity and orbital velocity?
Escape velocity is the minimum velocity required for an object to break free from the gravitational pull of a celestial body, while orbital velocity is the velocity required for an object to stay in a stable orbit around a celestial body. Escape velocity is higher than orbital velocity, as it is necessary to overcome the gravitational pull completely.
What is Velocity of projection of satellite?
The velocity of projection of a satellite refers to the initial velocity at which the satellite is launched into space. This velocity is crucial in determining the satellite's trajectory and orbit around the Earth or other celestial bodies. The velocity of projection is typically calculated based on the desired orbit and mission objectives of the satellite.
Can satellites at different heights have equal velocities?
Yes, satellites at different heights can have equal velocities if they are in circular orbits with the same period. In this case, the satellite at a higher altitude will have a slower velocity than the satellite at a lower altitude, but their velocities will be equal at any given point in their orbits.
Why the weight of a satellite and the centripetal force keeping the satellite in orbit is not a valid example of action and reaction to which Newton's Third Law of Motion applies?
First, Newton's Third Law of Motion says that for every action, there is an equal and opposite reaction.In this scenario, the Earth pulls the satellite. The equal and opposite reaction force would be the pull of the satellite on the Earth, not the centripetal force.The Centripetal force is the RESULTANT force on the satellite that accelerates it(although its speed does not change, velocity changes because the satellite changes direction constantly- it moves in a circular path. And for velocity to change, there must be a net force acting on the satellite), and keeps it in orbit. Please post on my message board if you have any other specific questions.
How does satellite create an orbit?
The orbit of every planet is an ellipse with the Sun at one of the two foci.A line joining a planet and the Sun sweeps out equal areas during equal intervals of time.[1]The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbitHERE THE PLANET IS THE SATELLITE AND SUN AS OUR EARTH
What does a planet in an elliptical orbit need to do to sweep out equal areas in equal amounts of time?
A planet in an elliptical orbit needs to move faster when it is closer to the focus of its orbit and slower when it is farther away. This ensures that it covers equal areas in equal amounts of time as it sweeps across different parts of its orbit.
What is the velocity in which the body covers equal displacements in equal intervals of ttime?
The velocity of the body is constant if it covers equal displacements in equal intervals of time. This is because velocity is defined as the rate of change of displacement with respect to time. If the body is covering equal distances at equal intervals, then the velocity remains constant.
What is the minimum velocity that a stream must have in order to transpport particles with diameter equal to 0.04?
The minimum velocity required to transport particles with a diameter of 0.04 in a stream is known as the critical velocity. It can be calculated using the Shields criterion, which takes into account the particle size, density, and fluid properties. The critical velocity is the velocity needed to start moving the particle and overcoming the forces acting on it due to gravity and drag.
When is the instantaneous velocity equal to avg velocity?
The instantaneous velocity is equal to the average velocity when the object is moving at a constant speed in a straight line.
When do you say that the velocity of the car is equal?
when a car travels equal distance in equal intervals of time its velocity is uniform and equal
What makes the satellite orbit?
A satellite orbits due to a balance between its forward velocity and the gravitational pull of the body it's orbiting around. This gravitational attraction causes the satellite to continuously fall towards the body it's orbiting, while its forward velocity propels it forward, creating a curved path around the body.
