GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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gravity and orbit
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gravity and inertia
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gravity and mass
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gravity and weight
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Detailed explanation-1: -The Sun’s gravity pulls the planets in orbit around it, and some planets pull moons in orbit around them. Even spacecraft are in motion through the solar system, either in orbit around the Earth or Moon, or traveling to further worlds, because of gravitational forces.
Detailed explanation-2: -Orbital Motion: Newton concluded that two factors-inertia and gravity– combine to keep Earth in orbit around the sun, and the moon in orbit around Earth.
Detailed explanation-3: -Any two masses are attracted towards each other by gravity. This force of gravity causes the Moon to change direction to make it orbit around the Earth. Newton worked out that, if the distance from the centre of the Earth doubles, gravity becomes a quarter as much as it was on the surface.
Detailed explanation-4: -Like all objects with mass, planets have a tendency to resist changes to their direction and speed of movement. This tendency to resist change is called inertia, and its interaction with the gravitational attraction of the sun is what keeps the planets of the solar system, including Earth, in stable orbits.