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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.
Related Questions: - A disc of radius 0.1 m is rotating with a frequency 10 rev/sec in a normal magnetic
- The electric potential V at any point (x,y,z) all in meters in space is given by
- Two cells, having the same e.m.f. are connected in series through an external resistance
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A disc of radius 0.1 m is rotating with a frequency 10 rev/sec in a normal magnetic
- The electric potential V at any point (x,y,z) all in meters in space is given by
- Two cells, having the same e.m.f. are connected in series through an external resistance
- Two satellites of earth, S₁ and S₂ are moving in the same orbit. The mass of S₁
- The ferromagnetic substance is
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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