What would happen to an orbiting planet if all of sudden it comes to standstill?

Q: Discuss why a satellite can orbit at 5 km above the Moon, but not at 5 km above Earth.

A: The earth's atmosphere is surrounded by air molecules about 600 km above the earth's surface. And at…

Q: What keeps the Earth in orbit?

A:

Q: When will the gravitational force between you and the Sun be greater—today at noon, or tomorrow at…

A: The Sun is closer to me today at noon than tomorrow at midnight

Q: How does the earth orbit the sun without losing energy?

A: The earth orbits around the sun without losing energy as the total energy of an orbiting systems is…

Q: Suppose that a satellite is moving at a speed of 2,000 m/s in a circular orbit around a planet. If…

A: Let the mass of the satellite is denoted by m moving with velocity v and acceleration a. The…

Q: Why satellites are in motion in earth orbit?

A: Launching satellite in to earth orbit is very similar to a projectile motion.In projectile motion if…

Q: Why does a satellite need no fuel to move round a planet in a fixed orbit?

A: Any object needs centripetal acceleration to keep itself in circular motion.

Q: If there is no gravity on earth then what happens?

A: The gravity is the reason, the earth is holding up together. Without the force of gravity to hold it…

Q: In two seconds, how far does a baseball fall beneath the straight-line path it would follow if…

A: If there is no initial speed, then it will not fall. It will remain at the same position since there…

Q: A planet follows an elliptical orbit that brings it as close as 46 million km to a star and as far…

A: Given data *The initial velocity of the planet is v1 = 38 km/s *The distance of the planet far from…

Q: What is geostationary satellite?Give two functions of such a satellite.

A: Geostationary satellite is a satellite which revolves around the earth. It completes one revolution…

Q: What is the angular velocity of an object that completes 1.5 circular orbits in half a minute?

A:

Q: Why are satellites normally sent into orbit by firing them in an easterly direction, the direction…

A: As a satellite is launched into specific orbit, the satellite must end up rotating into an orbit in…

Q: Find the speed of a satellite in a stable circular orbit around the Moon at a height 1,000 km on its…

A:

Q: ow long will it take Mars to complete two full orbit? Mars is 228 million kilometers away from the…

A: This question can be solved easily by using Kepler's Third law of planetary motion.…

Q: At what part of elliptical orbit does an Earth satellite have the greatest speed? The lowest speed?

A:

Q: For orbits of greater altitude, is the period of revolution of satellite longer or shorter?

A: Orbital speed of any satellite can be given using Kepler’s 2nd law of  motion which explain square…

Q: Calculate the force of gravity on the 1.4-kgkg mass if it were 1.28×107 mm above Earth's surface…

A:

Q: On which factors gravity between two planets depends?

A: The gravitational force (gravity) acting between two planets is expressed as:

Q: A planet of mass 6×10 to the 24th power kg is in orbit around a star of mass 2×10 to the 30th kg. If…

A: Given : m1 = 6 x 1024 kg m2 = 2 x 1030 kg r = 5 x 1011 m

Q: An artificial satellite is going round the earth, close to its surface. Calculate time taken by it…

A: As the satellite is moving very close to earth's surface, it can be assumed that the radius of orbit…

Q: Why doesn't the force of gravity change the speed of a satellite in circular orbit?

A: The gravitational force can’t change the speed of a satellite in circular orbit because the…

Q: Why are we not thrown off the surface of Earth by cerntrifugal force?

A: We are not thrown off the surface of Earth by centrifugal force because the gravity pull on our body…

Q: Calculate the force of gravity between a newborn baby (mass = 3 kg) and the planet Mars (mass = 6.4…

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Q: If we could "turn off gravity" as it acts between the Earth and a cell phone satellite that is in…

A: For the satellite to remain in its orbit, the centripetal force of the satellite must be balanced by…

Q: When a satellite is placed into a higher orbit, what happens to its period?

A: The time period of a satellite,

Q: If earth starts revolving with more speed then normal , what happens??

A: If the Earth starts spinning faster, then a lot of things can happen. Some of them are following:Due…

Q: Two masses are attracted by a gravitational force of 8.6 N. What will the force of attraction be if…

A: Let the mass of first and second object be M and m respectively. Let the original distance between M…

Q: Why our mass reduces on moon?

A: Weight is not absolute quantity. It varies with the place and altitude.

Q: As a meteor moves fromn a distance of 16 Earth radii to a distance of 2 Earth radii from the center…

A: solution is given by

Q: What is difference between open and closed orbits?

A: close orbit : a close orbit is one in which the orbiting body will eventually return to the same…

Q: If a cannonball were used instead of a rocket, how fast would it have to travel to escape Earth's…

A: Given cannonball is used to escape from Earth. We have to calculate the speed of the cannonball so…

Q: Are we under the gravitational force of any other planet then earth?

A: Yes, we are under the gravitational force of other planet then earth but since they are very far…

Q: As friction with our atmosphere causes a satellite to spiral inward, closer to Earth, its orbital…

A: This is a consequence of the law of conservation of angular momentum. The angular momentum is…

Q: A satellite, moving in an elliptical orbit, is 441 km above Earth's surface at its farthest point…

A:

Q: Motion in Polar and Cylindrical CoordinatesDeduce from the orbit equation

A: Given :                   r = (1+e)r01+ecosθ

Q: What Is The Minimum Distance Between Two Geostationary Satellites?

A: A geostationary orbit can be achieved solely at an altitude near to 35,786 kilometers i.e. 22,236…

Q: If the earth got a different shape, is it gonna have the same mass?

A: The centrifugal force is an inertial force (exactly as the gravitational force) that forms a force…