physicshelpline - Question of the day , Gravitationphysicshelpline - Question of the day , Gravitationhttps://www.physicshelpline.com/Question/gravitationThu, 16 Jul 2026 20:48:27 +0530http://zoho.com/sites/<![CDATA[Gravitation]]>https://www.physicshelpline.com/Question/post/gravitation

Q- A cosmic body is approaching to the earth with velocity v0 and the perpendicular distance of the centre of the earth from the line of motion of the cosmic body when it is in free space (aiming parameter) is l. Find the minimum distance of the body from the centre of earth if it passes through the earth without impact. (Neglect forces other than earth’ s gravity.)

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Q- A satellite of the Earth is moving in a circular orbit of radius R. By what fraction its velocity v be increased for the satellite to be in an elliptical orbit with minimum distance from the Earth equal to R and maximum distance from the Earth equal to 2R? 


Solution:

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