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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 particle has initial velocity(3i⃗ +4j⃗)and has acceleration (0.4i⃗ +0.3j⃗)
- In insulators (CB is Conduction Band and VB is Valence Band)
- An electric dipole of length 1 cm is placed with the axis making an angle of 30⁰
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e=300 sin[(100 π)t] V
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A particle has initial velocity(3i⃗ +4j⃗)and has acceleration (0.4i⃗ +0.3j⃗)
- In insulators (CB is Conduction Band and VB is Valence Band)
- An electric dipole of length 1 cm is placed with the axis making an angle of 30⁰
- An alternating emf given by equation e=300 sin[(100 π)t] V
- Potential at a point x-distance from the centre inside the conducting sphere
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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