Question

Calculate the force of gravitation between two objects of mass 50kg and 120 kg respectively kept at a distance of 10 m from one another (Gravitational constant, G = 6.7×10^-11 Nm^2/kg^2)

Answer 1

gravitational force is GMm/r^2
so
6.7 ×10^-11× 50×120/10×10
6.7×60×10^-11
40.2×10^-11
4.02×10^-10 Newton

Answer 2

Gravitational constant =f×r²/m1×m2
6.7×10-¹¹×120×60/10²=f
6.7×10-¹¹×12×6=f
6.7×72×10-¹¹=f
482.4×10-¹¹=f