question_answer

Three balls P, Q and R are in a straight line. The separation between P and R is 1m, and Q is placed at the midpoint between them. The masses of P, Q, and R are 200 g, 300 g and 400 g respectively. Find the net gravitational force on P (due to Q and R), Q (due to P and R) and R (due to P and Q) respectively.

A) \[2.13\times {{10}^{-11}}N,\text{ }4.80\times {{10}^{-11}}N,\text{ }3.73\times {{10}^{-11}}N\]

B) \[4.80\times {{10}^{-11}}N,\text{ 3}.73\times {{10}^{-11}}N,\text{ 8}.28\times {{10}^{-13}}N\]

C) \[5.20\times {{10}^{-12}}N,\text{ 7}.63\times {{10}^{-11}}N,\text{ 6}.23\times {{10}^{-11}}N\]

D) \[2.13\times {{10}^{-11}}N,\text{ 4}\text{.80}\times {{10}^{-11}}N,\text{ 6}.52\times {{10}^{-12}}N\]

E) None of these