Gravitation Tes...

The change in the value of $$g$$ at a height $$h$$ about the surface of the earth is the same as at a depth $$d$$ below the surface of earth. When both $$d$$ and $$h$$ are much smaller than the radius of earth, then which one of the following is correct?

An object falls a distance $$H$$ in $$50s$$ when dropped on the surface of the earth. How long would it take for the same object to fall through the same distance on the surface of a planet whose mass and radius are twice that of the earth? (Neglect air resistance)

The escape velocity of $$10g$$ body from the earth is $$11.2km{ s }^{ -1 }$$. Ignoring air resistance, the escape velocity of $$10kg$$ of the iron ball from the earth will be

If $$g$$ is the acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass $$m$$ raised from the surface of the earth to a height equal to the radius $$R$$ of the earth is

The height vertically above the earth's surface at which the acceleration duo to gravity becomes 1% of its value at the surface is (It is the radius of the earth) 

The height of a point vertically above the earth's surface at which the acceleration due to gravity becomes $$9\%$$ of its value at the surface is (Given, R$$=$$ radius of earth)

 The height at which the weight of a body becomes 1/16th its weight on the surface of earth (Radius R ) is:

A planet of radius $$R_p$$ is revolving around a star of radius $$R^{\ast}$$, which is at temperature $$T^{\ast}$$. The distance between the star and the planet is d. If the planet's temperature is $$fT^{\ast}$$, then f is proportional to.

If the acceleration due to gravity inside the earth is to be kept constant, then the relation between the density $$d$$ and the distance $$r$$ from the centre of earth will be

The escape velocity of a body projected vertically upwards from the surface of the earth is 'v' if the body is projected at an angle of $$30^o$$ with the horizontal, the escape velocity would be