Question
1
:
Two identical solid copper spheres of radius R placed in contact with each other. The gravitational attracton between them is proportional to
1. R-2 2. R-4 3. R2 4. R4
View Answer
Discuss with Members
|
|
Question
3
:
The radii of the earth and the moon are in the ratio 10 : 1 while acceleration due to gravity on the earth's surface and moon's surface are in the ratio 6 : 1. The ratio of escape velocities from earth's surface to that of moon surface is
1. 7.74 : 1 2. 10:01 3. 1.66 : 1 4. 6:01
View Answer
Discuss with Members
|
Question
4
:
The centripetal force acting on a satellite orbiting round the earth and the gravitational force of earth acting on the satellite both equal F. The net force on the satellite is
1. Zero 2. F√2 3. F 4. 2 F
View Answer
Discuss with Members
|
Question
5
:
If the acceleration due to gravity of a planet is half the acceleration due to gravity of earth's surface and radius of planet is half the radius of the earth, the mass of planet in terms of mass of earth is
1. Me/2 2. Me/6 3. Me/4 4. Me/8
View Answer
Discuss with Members
|
Question
6
:
A thin uniform, circular ring is rolling down an inclined plane of inclination 30° without slipping. Its linear acceleration along the inclined plane will be
1. g/2 2. g/3 3. g/4 4. 2g/3
View Answer
Discuss with Members
|
|
|
|
|