1
AIPMT 2007
+4
-1
Two satellites of earth, S1 and S2 are moving in the same orbit. The mass of S1 is four times the mass of S2. Which one of the following statements is true ?
A
The potential energies of earth and satellite in the two cases are equal.
B
S1 and S2 are moving with the same speed.
C
The kinetic energies of the two satellites are equal.
D
The time period of S1 is four times that of S2.
2
AIPMT 2006
+4
-1
The earth is assumed to be a sphere of radius R. A platform is arranged at a height R from the surface of the earth. The escape velocity of a body from this platform is fv, where v is its escape velocity from the surface of the Earth. The value of f is
A
1/2
B
$$\sqrt 2$$
C
1/$$\sqrt 2$$
D
1/3
3
AIPMT 2005
+4
-1
For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is
A
1/2
B
1/$$\sqrt 2$$
C
2
D
$$\sqrt 2$$
4
AIPMT 2005
+4
-1
Imagine a new planet having the same density as that of earth but it is 3 times bigger than the earth in size. If the acceleration due to gravity on the surface of earth is g and that on the surface of the new planet is g', then
A
g' = g/9
B
g' = 27g
C
g' = 9g
D
g' = 3g
EXAM MAP
Medical
NEET