Tach With BK

there is a force of attraction between any two massive particles in the universe, which is known as gravitational force or force of gravity. Magnitude of this force is proportional to the product of masses of the particles and inversely proportional to the square of distance between them.”

     Let two particals m1 and m2 ,and distance between ‘r’ than gravitational force  ‘F of magnitude,

                          F=Gm1m2/r^2

Where, 

                G= universal gravitational constant

    

Universal gravitational constant——–

                       F=Gm1m2/r^2

                         m1=m2=1 kg

                      r=1 meter

          Then,.   G=F

SI unit of ‘G’.        

                              Newton Metre^2/kg^2

                 Value of ‘G’.    6.67×10^-11