Question

The magnitude of gravitational force of attraction between two point objects is F.If the masses of each object and the distances between them are tripled,then the magnitude of new gravitation force between them.

Answer 1

The correct answer to the question will be F.

EXPLANATION:

Let the initial masses of the two objects are M and M' respectively.

Let R is the separation distance between them.

Hence, the gravitational force between them is calculated as -

Gravitational force $F_{g} =\ G\frac{MM'}{R^2}$  [1]

Here, G is called as the universal gravitational constant.

As per the question, the masses and separation distance are tripled.

Hence, the new masses will be 3M and 3M'.

The separation distance will be 3R.

The new force of gravity will be $F'_{g} =\ G\frac{3M\times 3M'}{(3R)^2}$

                                                            $=\ G\frac{9MM'}{9R^2}$

                                                            $=\ G\frac{MM'}{R^2}$  [2]

Hence, from 1 and 2, we get that the gravitational force will be the same as that of before.

Answer 2

Explanation:

correct answer is F,............