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Numerical problem based on Gravitation

Two metallic spheres of mass M are suspended by two strings each of length L.The distance between the upper ends of the strings is L.The angle which the strings  will make with the vertical due to mutual attraction of sphere is (if each mass horizontally moved by a distance of L/4 due to mutual attraction)

Asked Sonali Akbari

Answer/Solution

The following diagram explains the situation.

 

From the diagram,

or

Please feel free to ask if you need further clarification

Refer to The Pearson Guide to Objective Physics for Medical Entrance Examinations for more of such problems

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