| ⇦ | 
| ⇨ |
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: - In an A.C circuit of capacitance the current from potential is
- A particle is executing the motion x=Acos (ωt-θ). The maximum velocity of the particle is
- The circular motion of a particle with constant speed is
- P-type semiconductors are made by adding impurity element
- The identical cells connected in series are needed to heat a wire of length one meter
Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In an A.C circuit of capacitance the current from potential is
- A particle is executing the motion x=Acos (ωt-θ). The maximum velocity of the particle is
- The circular motion of a particle with constant speed is
- P-type semiconductors are made by adding impurity element
- The identical cells connected in series are needed to heat a wire of length one meter
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