Gravitation Tes...

Which Newton's laws describe thrust?

Two block of mass $$m_1$$ and $$m_2$$ are kept $$d$$ apart from each other. What happens to the magnitude of the gravitational force $$F$$ acting on the two blocks, if the distance between the center of the masses is halved?

Which of the following equations or principle is most suitable to solve given question. 

Two block of mass $$m_1$$ and $$m_2$$ are kept apart d from each other. What happen to the magnitude of the force on $$ m_{1}$$ if the mass of $$m_{2}$$ is doubled?

We have a substance having density x kept in a medium of density y. Then what is its relative density with respect to the medium?

Relation between density ($$\rho$$), relative density $$r$$, and density of water $$\rho_o$$ is given by:

If we consider the gravitational force F between two objects of masses $$m_1$$ and $$m_2$$  respectively, separated by a distance R , and we double the distance between them, what is the new magnitude of the gravitational force between them? 

If volume of a steel ball is halved and its mass remains constant, its relative density will be:

Assuming a person could survive in all of the following locations, where would this person have the most mass?

A globe of steel has a mass of 12 g and a volume of $$15.2 cm^3$$. Find its relative density wrt water.