Three balls P, Q and R are kept 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, R are 200 g, 300 g and 400 g respectively. Find the net gravitational force on P, Q and R respectively.

2.13×10−11N,4.80×10−11N,3.73×10−11N

4.80×10−11N,3.73×10−11N,8.28×10−13N

5.20×10−12N,7.63×10−11N,6.23×10−11N

2.13×10−11N,4.80×10−11N,6.52×10−12N

None of these

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Three balls P, Q and R are kept 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, R are 200 g, 300 g and 400 g respectively. Find the net gravitational force on P, Q and R respectively.

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Three balls P, Q and R are kept 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, R are 200 g, 300 g and 400 g respectively. Find the net gravitational force on P, Q and R respectively.

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