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The kinetic energy needed to project a body of mass m from the surface of earth (radius R) to infinity is
Options
(a) mgR/2
(b) 2mgR
(c) mgR
(d) mgR/4
Correct Answer:
mgR
Explanation:
The kinetic energy =1/2MVe²
The escape velocity Ve=√2gR
Ve²=2gR
= 2mgR/2
=mgR
Related Questions: - Heat is supplied at constant pressure to diatomic gas. The part of this heat that goes
- Curie temperature above which
- Dimensions of Torque are
- The magnetic moment has dimensions of
- A coil has resistance 30 ohm and inductive reactance 20 ohmn at 50 Hz frequency.
Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Heat is supplied at constant pressure to diatomic gas. The part of this heat that goes
- Curie temperature above which
- Dimensions of Torque are
- The magnetic moment has dimensions of
- A coil has resistance 30 ohm and inductive reactance 20 ohmn at 50 Hz frequency.
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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