Welcome to your GRAVITATIONAL-1
1.
Work needed to lift mass m from R to 2R is:
2.
Escape velocity of Earth is ~11.2 km/s. If mass doubles, new vₑ:
3.
A satellite in elliptical orbit moves fastest at:
4.
Force between two masses doubles if:
5.
Work by gravity on satellite in circular orbit is:
6.
Escape velocity depends on:
7.
Kinetic energy of orbiting satellite is:
9.
Value of g at depth R/2 is:
10.
Potential energy of two masses becomes zero when:
11.
Escape velocity on planet with density ρ is proportional to:
12.
Gravitational potential is:
13.
A mass M and m have force F. If r increases to 3r, force becomes:
14.
Acceleration due to gravity is independent of:
15.
Potential energy curve of gravitation is:
17.
Gravitational potential energy is minimum at:
18.
g on top of mountain decreases because:
19.
A satellite is raised but kinetic energy is unchanged. Its speed:
20.
Weight of a body at center of Earth is:
21.
If Earth shrinks to half radius with same mass, g becomes:
22.
Force at Earth's center is:
23.
Escape velocity on Moon vs Earth:
24.
Gravitational potential inside uniform sphere varies as:
25.
Orbital speed in circular orbit is:
26.
Satellite total energy in orbit is:
27.
Gravitational force between two masses becomes half if distance becomes:
28.
A geostationary satellite has period:
29.
Kepler’s first law: orbit is:
30.
Weight becomes maximum at:
31.
A body at Earth’s surface weighs W. At 2R it weighs:
32.
If a body goes to height R, g becomes:
33.
If orbital radius becomes 4r, orbital speed becomes:
34.
A satellite with higher radius has:
35.
Time period of satellite T ∝:
36.
Variation of g with height h:
37.
Escape velocity does not depend on:
38.
Gravitational potential at ∞:
39.
Density of planet doubled with same radius, g becomes:
40.
Orbital speed in circular orbit is:
41.
If height increases, potential energy:
42.
Weightlessness occurs when:
43.
Two masses separated by r have potential energy:
44.
Gravitational intensity is:
45.
If angular momentum L is constant, r and v relation:
