Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Gravitation

Question:

A body is imparted a velocity v from the surface of the earth. If v0 is orbital velocity and ve be the escape velocity then for

(A) v = v0, the body follows a circular track around the earth.
(B) v > v0 but < ve, the body follows elliptical path around the earth.
(C) v < v0, the body follows elliptical path and returns to surface of earth.
(D) v > ve, the body follows hyperbolic path and escapes the gravitational pull of the earth.

Options:

A, B

B, C

A, B, C

A, B, C, D

Correct Answer:

A, B, C, D

Explanation:

 Velocity of Satellite 

 Nature of Path

 v = v0

 Circular path around the earth.

 v < v0

 Elliptical path and body returns to earth.

 v > v0 but < ve 

 Elliptical path around the earth and will not escape. 

 v = ve

 Parabolic path and it escapes from the earth.

 v > ve

 Hyperbolic path and escapes from earth.