NEET Class neet Answered
Please answer the following question with explanation
Asked by deepakudgiri29 | 02 May, 2019, 11:07: PM
Expert Answer
Figure shows the forces Fg and Fe acting on charged spheres in hemisphere of radius R at equilibrium position.
Fg = mg is the gravitational force, where m is mass of sphere. Fe = , where d is the separation distance between spheres.
Let us resolve the two forces so that one component is normal to the contact point and other one parallel to tangent at contact point.
As shown in figure, balancing components of two forces are Fg cosθ and Fe sinθ.
Hence Fg cosθ = Fesinθ or
Hence
Answered by Thiyagarajan K | 03 May, 2019, 10:29: AM
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