How Can I Find a Solution to a Simple Problem?

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The discussion focuses on finding a solution to determine the angle at which two smaller spheres (A and C) make contact with a larger sphere using geometry. It emphasizes that the forces between the spheres act along the contact normals, and extending these lines to the centers of the spheres allows for angle determination. A triangle can be formed using the centers of the spheres, with sides defined by the radii of the spheres. The relationship between the radii and the triangle's sides is crucial for solving the problem. The user expresses gratitude for the assistance provided in resolving the issue.
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I need a solution to this. If it is possible to show me the complete solution

See attach JPG

Thanks
 

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Use geometry, and show what you have done so far.
 
I`ve got Ground and A and Ground and B. Is there a way of determining the angle (not from the answers) where circel A and C make contact, using the radius?
 
Yes:
1. The forces between the balls acts along the contact normals.
2. If you extend the line of the normal on the surface into the sphere's you'll end up in that sphere's center.
3. But that means you can determine the angles from the triangle drawn between the 3 centres:
Let R be the radius in the big sphere, r the radius in the two smaller spheres:
Then the triangle has sides: 2r,r+R,r+R
 
thank you sorted
 

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