| ⇦ | 
| ⇨ |
A particle of masses m is thrown upwards from the surface of the earth, with a velocity u. The mass and the radius of the earth are, respectively, M and R. G is gravitational constant and g is acceleration due to gravity on the surface of the earth. The minimum value of u so that the particle does not return back to earth, is
Options
(a) √( 2GM / R)
(b) √( 2GM / R)²
(c) √( 2G R²)
(d) √( 2GM / R)²
Correct Answer:
√( 2GM / R)
Explanation:
The velocity u should be equal to the escape velocity. That is, u = √(2gR)
But g = GM / R² ⇒ u = √(2 . GM / R² . R)
√( 2GM / R)
Related Questions: - During an adiabatic process, the cube of the pressure is found to be inversely
- A body of mass 10 kg is moving on an inclined plane of inclination 30°with an acceleration
- The shortest wavelength in Lyman series is 91.2 nm. The largest wavelength
- Electromagnetic induction is not used in
- In nuclear fusion, two nuclei come together to form a large nucleus.
Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- During an adiabatic process, the cube of the pressure is found to be inversely
- A body of mass 10 kg is moving on an inclined plane of inclination 30°with an acceleration
- The shortest wavelength in Lyman series is 91.2 nm. The largest wavelength
- Electromagnetic induction is not used in
- In nuclear fusion, two nuclei come together to form a large nucleus.
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply