Gravitation 5 Question 10
11. A large spherical mass is fixed at one position and two identical masses are kept on a line passing through the centre of (see figure). The point masses are connected by a rigid massless rod of length and this assembly is free to move along the line connecting them. All three masses interact only through their mutual gravitational interaction. When the point mass nearer to is at a distance from the tension in the rod is zero for . The value of is
(2015 Adv.)
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Answer:
Correct Answer: 11. (7)
Solution:
- For point mass at distance
For point mass at distance
Equating the two equations, we have