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A satellite is revolving around the earth with a kinetic energy E. The minimum addition of kinetic energy needed to make it escape from its orbit is
Options
(a) 2E
(b) 2/E
(c) E/2
(d) E
Correct Answer:
E
Explanation:
The potential energy of a satellite is negative and twice its kinetic energy. If it has to escape, it has to be given an additional energy to nullify the energy due to attraction.
E is the energy to be given so that the satellite can escape.
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A block of mass 4 kg is kept on a rough horizontal surface.The coefficient of static
- The difference in the variation of resistance with temperature in a metal
- A cylindrical tank is filled with water to a level of 3m. A hole is opened at a height
- A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion
- Four identical cells of emf Ԑ and internal resistance r are to be connected in series.
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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