GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The planets would move off in a straight line without the sun.
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The planets would stop moving without the sun.
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The planets would continue to move in orbit without the sun.
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None of the above
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Detailed explanation-1: -If suddenly the Sun vanishes, the gravitational force between the Sun and the Earth will disappear. So, the Earth will no more be able to orbit around the sun. Thus, it will start moving in the direction of velocity in a straight line.
Detailed explanation-2: -If the sun was no more, then Earth would be drawn to a new centre of gravity. The gravity of Earth and the rest of the solar system would be affected and – with there being no constant energy supply from the sun – Earth would start drifting into space.
Detailed explanation-3: -If the Sun miraculously disappeared, the Earth (and all the other objects in the Solar System) would continue their forward motion in a straight line off into space, instead of following their almost-circular orbits. For the Earth this means it would head off towards the stars at about 30km/s (67, 000mph).
Detailed explanation-4: -Without the Sun’s gravity, all objects in the solar system would move a straight line into outer space. All planets orbit the Sun in a counterclockwise direction (as seen form Earth’s North Pole) with those planets closest to the Sun traveling the shortest distance.