Gravitational Potential Energy and Gravitational Potential NEET Questions

Physics - Gravitation

Gravitational Potential Energy and Gravitational Potential MCQ Questions


1.

The gravitational potential energy of an isolated system of three particles, each of mass m, placed at the corners of an equilateral triangle of side l is:

A.

-Gm2/l2

B.

-Gm2/2l

C.

-2Gm2/l

D.

-3Gm2/l

😑 View Answer Rough Work Error
ANSWER :

D. -3Gm2/l

2.

An artificial satellite moving in a circular orbit around the Earth has a total (kinetic + potential) energy E0. Its potential energy is:

A.

-E0

B.

1.5 E0

C.

2 E0

D.

E0

😑 View Answer Rough Work Error
ANSWER :

C. 2 E0

3.

A satellite of mass m is orbiting the Earth (of radius R) at a height h from its surface. What is the total energy of the satellite in terms of g0? (g0 is the value of acceleration due to gravity at the Earth's surface)

A.

mg0R2/2(R+h)

B.

-mg0R2/2(R+h)

C.

2mg0R2/(R+h)

D.

-2mg0R2/(R+h)

😑 View Answer Rough Work Error
ANSWER :

B. -mg0R2/2(R+h)

4.
A body of mass m is taken from the Earth's surface to a height equal to twice the radius (R) of the Earth. The change in potential energy of the body will be:
A.
(2/3)mgR
B.
3mgR
C.
(1/3)mgR
D.
2mgR
😑 View Answer Rough Work Error
ANSWER :
A. (2/3)mgR
5.
The energy required to move a satellite of mass m from an orbit of radius 2R to 3R around the Earth having mass M is:
A.
GMm/12R
B.
GMm/R
C.
GMm/8R
D.
GMm/2R
😑 View Answer Rough Work Error
ANSWER :
A. GMm/12R
6.
A satellite of mass 1000 kg revolves in a circular orbit around the Earth with a constant speed of 100 m/s. The total mechanical energy of the satellite is:

NEET - 2019

A.
-0.5 MJ
B.
-25 MJ
C.
-5 MJ
D.
-2.5 MJ
😑 View Answer Rough Work Error
ANSWER :
D. -2.5 MJ