Question 1 :
Mass of moon is $7.34\times 10^{22}kg$. If the acceleration due to gravity on the moon is $1.4 ms^{-2}$, the radius of the moon is: $[G=6.667\times 10^{-11} N m^2 kg^{-2}]$
Question 2 :
A lead sphere of mass $20 kg$ has the same diameter as an aluminium sphere of mass $72 kg$. The spheres are simultaneously dropped from a tower. When they are $10m$ from the ground, they have identical (neglect air resistance):<br/>
Question 3 :
The force acting on a mass of $1 g$ due to the gravitational pull on the earth is called $1 gwt$. One $gwt$ equals
Question 4 :
Acceleration of a body thrown up from the surface of the earth is equal to
Question 6 :
How is the acceleration due to gravity on earth surface related to the mass $M$ and radius $R$ of earth?
Question 7 :
On the earth surface, 'g' is a vector and its direction is oriented towards the centre of the
Question 8 :
The diameters of two planets are in ratio $4:1$. Their mean densities have ratio $1:2$. The ratio of '$g$' on the planets will be:
Question 9 :
If the radius of the earth were to shrink by 1%, its mass remaining the same, the acceleration due to gravity on the earth's surface would:
Question 10 :
Two identical spherical masses are kept at some distance. Potential energy when a mass $m$ is taken from the surface of one sphere to the other
Question 11 :
The value of 'g' at the depth from the ground goes on _____________.
Question 12 :
The value of acceleration due to gravity near the earth's surface is
Question 13 :
The force acting on a mass of 1 g due to the gravitational pull on the earth is called 1 g wt. One g wt equals
Question 15 :
The acceleration of free fall for object moving near the surface of Earth is:
Question 16 :
A body is lying on the surface of earth.Suppose that the earth suddenly loses its power of attraction, then
Question 18 :
The SI unit of 'g' is same as that of _______.
Question 19 :
When an object is thrown up from the surface of the earth, the force of gravity:<br/>
Question 20 :
The speed of a falling body increases continuously. This is because :<br>
Question 21 :
The normal force of an object of mass 5 kg , measured by a force metre is seen to be 50 N. Determine the acceleration due to gravity in $cm/s^2$
Question 22 :
If M is the mass of the earth and R its radius, the ratio of the gravitational acceleration and the gravitational constant is given by:<br/>
Question 23 :
Where is the intensity of the gravitational field of the earth maximum?
Question 24 :
When will multiple objects of different nature, shape, size etc fall from the same height at the same rate?
Question 26 :
A particle falling down freely under the influence of gravity covers a distance of 20 m in 4 secs. Find its acceleration
Question 27 :
If density of earth increases 4 times and its radius becomes half of what it is, our weight will:
Question 29 :
The average value of acceleration due to gravity on the surface of the earth is equal to :
Question 30 :
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass is 3.5 kg. Both spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same<br>