Gravitation Tes...

The gravitational field is a conservative field. The work done in this field by moving an object from one point to another

Which of the following quantities remain constant in a planetary motion, when seen from the surface of the sun?

The escape velocity from the earth for a rocket is 11.2 km/sec. Ignoring the air resistance, the escape velocity of 10 mg grain of sand from the earth will be

A gravitational field is present in a region. A point mass is shifted from $$A$$ to $$B$$, along different paths shown in the figure. If $$W_{1}$$ , $$W_{2}$$ and $$W_{3}$$ represent the work done by gravitational force for respective paths, then

The escape velocity of a body depends upon its mass as

The earth retains its atmosphere. This is due to

If $$g$$ on the surface of the Earth is $$9.8$$ $$ms^{-2}$$, then it's value at a depth of $$3200$$ $$km$$ (Radius of the earth $$ =  6400$$ $$km$$) is

The value of quantity 'G' in the law of gravitation:

The escape velocity from the earth for a rocket is $$11.2$$ km/s ignoring air resistance. The escape velocity of $$10$$ mg grain of sand from the earth will be

The acceleration due to gravity at a depth of $$1600km$$ inside the earth is