InterviewSolution
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InterviewSolution
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A uniform metal sphere of radius `R` and mass `m` is surrounded by a thin uniform spherical shell of same mass and radius `4R`. The centre of the shell `C` falls on the surface of the inner sphere. Find the gravitational fields at points `A` and `B`. |
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Answer» Correct Answer - A::B At point `A`, field stength due to shell will be zero. Net field is only due metal sphere. Distance between centre of metal sphere and point `A` is `4R`. `:. E_(A) = (G(m))/(4R)^(2) = (Gm)/(16 R^(2)` (ii) At point `B`, net field is due to both, due to shell and due to metal sphere. `:. E_(B) = (Gm)/(5R)^(2) + (Gm)/(6 R)^(2)` `= (61 Gm)/(900 R^(2))` |
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