Hi krishna kumar The gravitational force is a force that attracts any two objects with mass. We call the gravitational force attractive because it always tries to pull masses together, it never pushes them apart.
Initially, satellites use an elliptical path. Rocket motors onboard the satellite are manipulated by ground control in order to correct the satellite’s ideal path, which is circular. If the satellite is fired at its apogee and thrust is applied in the flight path’s direction, the orbit becomes more circular.
There is a difference between the geostationary and geosynchronous orbits. We should note that while other orbits may be many, there is ONLY ONE Equatorial orbit, i.e. the orbit which is directly above the earth’s equator.
The Galaxy is moving through space. Many astronomers believe the Milky Way is moving at approximately 600 km/s relative to the observed locations of other nearby galaxies.
Orbital mechanics focuses on spacecraft trajectories, including orbital maneuvers, orbit plane changes, and interplanetary transfers, and is used by mission planners to predict the results of propulsive maneuvers.
Orbital velocity is the speed that an object must maintain in order to orbit another object. Escape velocity is the speed at which an object would break orbit. Escape velocity must be square-root of 2 times larger than the orbital velocity in order to break orbit.
law of universal gravitation states that a particle attracts every other particle in the universe using a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers
The gravitational constant, also known as the universal gravitational constant, or as Newton's constant, denoted by the letter G, is an empirical physical constant involved in the calculation of gravitational effects in Sir Isaac Newton's law of universal gravitation and in Albert Einstein's general theory of relativity. Its measured value is approximately 6.674×10−11 m3⋅kg−1⋅s−2.[1]
The speed an object must reach to escape the pull of gravitation exerted by another object. Note: To overcome the gravitation of the Earth and place an artificial satellite in orbit, a rocket must reach a speed of about 25,000 miles per hour, or about seven miles per second.
The gravitational field intensity (EG) or (g) is the force on a unit mass at a point in the field. Since the force (F) on a body of mass m in a gravitational field of a body of mass M = GMm/r2 you can see that the force per unit mass is given by F/m.
1) Inertial mass. This is mainly defined by Newton's law, the all-too-famous F = ma, which states that when a force F is applied to an object, it will accelerate proportionally, and that constant of proportion is the mass of that object. In very concrete terms, to determine the inertial mass, you apply a force of F Newtons to an object, measure the acceleration in m/s2, and F/a will give you the inertial mass m in kilograms.
2) Gravitational mass. This is defined by the force of gravitation, which states that there is a gravitational force between any pair of objects, which is given by
The general expression for gravitational potential energy arises from the law of gravity and is equal to the work done against gravity to bring a mass to a given point in space
Earth's surface - the outermost level of the land or sea; "earthquakes originate far below the surface"; "three quarters of the Earth's surface is covered by water"
Orbital velocity is the velocity at which a body revolves around the other body. Objects that travel in uniform circular motion around the Earth are called to be in orbit. The velocity of this orbit depends on the distance between the object and the center of the earth.
Gravitational potential energy is energy an object possesses because of its position in a gravitational field. The most common use of gravitational potential energy is for an object near the surface of the Earth where the gravitational acceleration can be assumed to be constant at about 9.8 m/s2.
ReplyDeleteGood One
Venkatesh: What is lowest velocity
ReplyDeleteVenkatesh
ReplyDeleteThe low-velocity zone (LVZ) occurs close to the boundary between the lithosphere and the asthenosphere in the upper mantle.
Krishnan: whether the G is Gravitational force?
ReplyDeleteHi krishna kumar
DeleteThe gravitational force is a force that attracts any two objects with mass. We call the gravitational force attractive because it always tries to pull masses together, it never pushes them apart.
Sir, Where the orbital velocity is applied?
ReplyDeleteInitially, satellites use an elliptical path. Rocket motors onboard the satellite are manipulated by ground control in order to correct the satellite’s ideal path, which is circular. If the satellite is fired at its apogee and thrust is applied in the flight path’s direction, the orbit becomes more circular.
DeleteGeo synchronous or Polar satellite functions on which orbital system?
ReplyDeleteHi Krishna Kumar
DeleteThere is a difference between the geostationary and geosynchronous orbits. We should note that while other orbits may be many, there is ONLY ONE Equatorial orbit, i.e. the orbit which is directly above the earth’s equator.
Sir, the content is very clear but if you could provide some more illustrations it will help us to understand better.
ReplyDeleteOk
Deleteblog information very useful sir
ReplyDeleteOk thanks
Deletewhat is galaxy moving
ReplyDeleteThe Galaxy is moving through space. Many astronomers believe the Milky Way is moving at approximately 600 km/s relative to the observed locations of other nearby galaxies.
Deletewho find out the escape velocity?
ReplyDeleteThe concept comes directly from Newton’s law of gravitation, discussed in the Principia Mathematica.
Deletehi sir
ReplyDeletein which field we use orbital velocity
Orbital mechanics focuses on spacecraft trajectories, including orbital maneuvers, orbit plane changes, and interplanetary transfers, and is used by mission planners to predict the results of propulsive maneuvers.
Deletewhat is the difference between orbital velocity and escape velocity?
ReplyDeleteOrbital velocity is the speed that an object must maintain in order to orbit another object. Escape velocity is the speed at which an object would break orbit. Escape velocity must be square-root of 2 times larger than the orbital velocity in order to break orbit.
Deletegood evening sir
ReplyDeletestate the universal law of gravitation?
law of universal gravitation states that a particle attracts every other particle in the universe using a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers
DeleteHi Sir
ReplyDeleteDefine gravitation constant. give its value,unit, and dimensional formula?
The gravitational constant, also known as the universal gravitational constant, or as Newton's constant, denoted by the letter G, is an empirical physical constant involved in the calculation of gravitational effects in Sir Isaac Newton's law of universal gravitation and in Albert Einstein's general theory of relativity. Its measured value is approximately 6.674×10−11 m3⋅kg−1⋅s−2.[1]
Deletesir
ReplyDeletewhat is escape speed? option an expression for it?
The speed an object must reach to escape the pull of gravitation exerted by another object. Note: To overcome the gravitation of the Earth and place an artificial satellite in orbit, a rocket must reach a speed of about 25,000 miles per hour, or about seven miles per second.
DeleteHello sir
ReplyDeleteDefine gravitational filed intensity?
The gravitational field intensity (EG) or (g) is the force on a unit mass at a point in the field. Since the force (F) on a body of mass m in a gravitational field of a body of mass M = GMm/r2 you can see that the force per unit mass is given by F/m.
Deletesir
ReplyDeleteDifferentiate between inertial mass and gravitational mass?
1) Inertial mass. This is mainly defined by Newton's law, the all-too-famous F = ma, which states that when a force F is applied to an object, it will accelerate proportionally, and that constant of proportion is the mass of that object. In very concrete terms, to determine the inertial mass, you apply a force of F Newtons to an object, measure the acceleration in m/s2, and F/a will give you the inertial mass m in kilograms.
Delete2) Gravitational mass. This is defined by the force of gravitation, which states that there is a gravitational force between any pair of objects, which is given by
F = G m1 m2/r2
where G is the universal gravitational constant
Good morning sir
ReplyDeleteobtain an expression for the gravitational potential at a point?
The general expression for gravitational potential energy arises from the law of gravity and is equal to the work done against gravity to bring a mass to a given point in space
Deletesir
ReplyDeletewhat is mean by earth surface?
This comment has been removed by the author.
DeleteEarth's surface - the outermost level of the land or sea; "earthquakes originate far below the surface"; "three quarters of the Earth's surface is covered by water"
DeleteGood evening sir
ReplyDeletewhat are the factors affecting the 'g' value?
As we know, g=Gx M/R²
Deletewhere G= Gravitaional constant,
sir
ReplyDeletewhat is orbital velocity?obtain an expression for it?
Orbital velocity is the velocity at which a body revolves around the other body. Objects that travel in uniform circular motion around the Earth are called to be in orbit. The velocity of this orbit depends on the distance between the object and the center of the earth.
Deletehi sir
ReplyDeleteDefine gravitational potential energy?
Gravitational potential energy is energy an object possesses because of its position in a gravitational field. The most common use of gravitational potential energy is for an object near the surface of the Earth where the gravitational acceleration can be assumed to be constant at about 9.8 m/s2.
DeleteAre astronauts weightless of the moon?
ReplyDeleteIf you asked anyone why the astronauts are weightless in space, they would probably all say 'because there isn't any gravity.
ReplyDelete