Two objects of different masses falling freely near the surface of moon would

The gravitational force between two objects is F. If masses of both objects are halved without changing distance between them, then the gravitational force would become

A boy is whirling a stone tied with a string in an horizontal circular path. If the string breaks, the stone

An object is put one by one in three liquids having different densities. The object floats with 1/9, 2/11 and 3/7 parts of their volumes outside the liquid surface in liquids of densities d₁, d₂ and d₃ respectively. Which of the following statement is correct?

In the relation F = G M m/d², the quantity G