Gravitation · Law of gravitation

Net gravitational force at the centre of a square is found to be

F_1

when four particles having mass

M

2M

3M

and

4M

are placed at the four corners of the square as shown in figure and it is

F_2

when the positions of

3M

and

4M

are interchanged. The ratio

\dfrac{F_1}{F_2}

\dfrac{\alpha}{\sqrt5}

. The value of

\alpha

is .

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