Fill in the chart with the correct values of F for each change in the system described in questions

We know that the gravitational force F between two masses P and Q, that are separated by a distance R is:

Where G is the gravitational constant.

a) Mass P is doubled, then we have 2*P instead of P, the new force is:

b) Now R is doubled, then instead of R, we have 2*R:

c) Now we replace P by 2*P, and Q by 3*Q

d) The entire mass of the system is increased by a factor of 4, then both of the individual masses are increased by a factor of 4.

Then we need to replace P by 4*P, and Q by 4*Q.

e) Now we replace R by R/2.