Answer:
The variation equation is
step-by-step explanation:
From the question, the two masses are
This implies that the product of the two masses
Moreover, the force,f varies directly with the products of the two masses
Also, the force varies inversely with the square of the distance,r
Joining equation 1 and 2, we got
But the constant of variation is k
Multiplying the right hand side of the equation by k, we got