Welcome to your Gravitational - 3
1.
Escape velocity from Earth depends on
2.
Escape velocity of a planet is directly proportional to
3.
If torque on a system is zero, which quantity remains constant?
4.
Orbital velocity of satellite near Earth surface is
5.
Kepler’s second law applies because gravitational force is
6.
Which of the following is a central force?
7.
Areal velocity is maximum when planet is
8.
Central force always acts
9.
If Earth’s radius is doubled keeping mass same, escape velocity becomes
10.
Geostationary satellite has time period equal to
11.
Escape velocity is independent of
12.
The area swept by radius vector in time Δt is proportional to
13.
A satellite of very small mass revolves around Earth. Force on satellite is
14.
Central force does not cause change in
15.
Angular momentum of a particle under central force is
16.
Escape velocity from Earth surface is approximately
17.
Expression for g at height h (h ≪ R) is
18.
Kepler’s second law is equivalent to conservation of
19.
If orbital radius increases, total energy of satellite becomes
20.
Formula for escape velocity is
21.
Escape velocity does not depend on
22.
Geostationary satellite revolves in
23.
Energy of satellite in circular orbit is
24.
At height equal to Earth’s radius, g becomes
25.
Torque acting on a particle under central force is
26.
Orbital velocity depends on
27.
Areal velocity of a particle under central force is
28.
For inverse square force, orbit of planet can be
29.
Escape velocity from Moon is less because Moon has
30.
A force always directed towards a fixed point is called
31.
A body projected vertically upward with escape velocity will
32.
Escape velocity of a planet is directly proportional to
33.
Gravitational force between Sun and planet acts along
34.
Central force depends on
35.
If a body is projected with speed greater than escape velocity, it will
36.
Rate of change of angular momentum equals
37.
g decreases with height because
38.
Time period of satellite increases when
39.
If force acting on a planet is central, its areal velocity is
40.
For a planet in orbit, area swept in short time Δt equals
41.
If angular momentum increases, areal velocity
42.
g at infinite height is
43.
Motion of a particle under central force is confined to
44.
Relation between escape velocity and orbital velocity is
45.
Weightlessness in satellite occurs because
