On the earth acceleration due to gravity, 'g' is minimum at
equator
magnetic north pole
magnetic south pole
poles
Calculate the gravitational force on a stone of mass 10 kg.
9.8 N
98 N
101 N
0.98 N
The weight of a body on the moon is one - sixth of its weight on the earth.How will be the mass of the body vary ?
becomes 1/6 th
remains the same
becomes 6 times
becomes 1/8 th
The numerical value of G is :
6.67 x 10-11 Nm2/kg2
6 x 1024 kg
6.4 x 106 m
6.67 x 10-11 Nm2/kg
Force of gravitation is
Always the force of attraction
Always the force of repulsion
Either attraction or repulsion
None of these
Where is the value of 'g' greater,at the poles or at the equator?
Equator
At the centre
Poles
Geocentric theory was proposed by
Ptolemy
Copernicus
Tycho Brahe
Kepler
The equation for the Universal Law of Gravitation is :
F = Gm1m2/r2
F = Gr2/ m1m2
F = G(m1/m2)r2
F = (m1m2/r2)
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.
