The force with which the earth pulls objects towards it is called
repulsive force
gravitational force
vacuum force
attractive force
The geocentric theory propounded that the
Sun was stationary at the centre of the universe with the planets revolving around it in orbits.
The earth is stationary and is at the centre of the universe, with the Sun , moon, planets and stars, revolving around the earth.
Planets revolving around the Sun in elliptical orbits with the Sun at one of the foci of the ellipse.
None of these
S.I unit of gravitational constant 'G' is
Nm2 kg2
Nm2/kg2
N/m2 kg2
N/m2 kg-2
The weight of a body of mass 5 kg is
79.0 N
49.0 N
39.0 N
69.0 N
On the earth acceleration due to gravity, 'g' is minimum at
equator
magnetic north pole
magnetic south pole
poles
The mass of a body is measured to be 12kg on earth. If it is taken to moon, the mass will be
72 kg
2 kg
12 kg
24 kg
Calculate the gravitational force on a stone of mass 10 kg.
9.8 N
98 N
101 N
0.98 N
Every object in the universe attracts every other object with a force which is inversely proportional to
square of the distance
distance
cube of the distance
product of masses
Heliocentric Theory was proposed by
Ptolemy
Copernicus
Tycho Brahe
Kepler
If the masses of both the objects are doubled, the gravitational force of attraction is
Doubled
Halved
Becomes 4 times
Becomes (1/4)th