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