Gravitation Tes...

If $$g_{1}$$ is the acceleration due to gravity on the surface of earth, $$g_{2}$$ that at a height $$h$$ ($$h <<$$ radius of earth) and $$g_{3}$$ that at a depth $$h$$, then their ascending order is 

The value of universal gravitational constant on earth for a particle of mass 5 kgs is 

The value of universal gravitational constant depend upon:

Acceleration due to gravity at surface of a planet is equal to that at surface of the earth and density is $$1.5$$ times that of earth. if radius of earth is $$R$$, radius of planet is

Which of the following graphs shows the variation of acceleration due to gravity $$g$$ at height $$h$$ from the surface of earth?

In the figure it is shown that the velocity of lift is $$2\;{\text{m}}{{\text{s}}^{{\text{ - 1}}}}$$ while string ins winding on the motor shaft with velocity $$2\;{\text{m}}{{\text{s}}^{{\text{ - 1}}}}$$ and shaft A is moving downward with velocity $$2\;{\text{m}}{{\text{s}}^{{\text{ - 1}}}}$$ with respect lift, then find out the velocity of block B

The value of $$'g'$$ reduces to half of its value at surface of earth at a height $$'h'$$, then 

If the earth were to suddenly contract to half its present size, without any change in its mass, the duration of the new day be 

The acceleration due to gravity on a planet is $$1.96\,m/{s^2}$$. If it is safe jump from a height of $$3$$m on the earth, the corresponding height on the planet will be 

If the radius of the earth is suddenly contracts to half of its present value, then duration of day will be of