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Consider a unigorm annular sphere of density p and internal radius 2m an external radius 4m. The graviational field strength at a point at a distance r=3 m, from the centre of shaper is : A. `-(32Gpip)/(9)`B. `-4Gpi`C. `-(32Gpip)/(9)`D. `(76)/(27)Gpip` |
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Answer» Correct Answer - D `E=(GM)/(r^(2))` `EG=(GM)/(9)` Where M `rArrpx[(4pi)/(3)[3^(3)-2^(3)]]` `rArr(pxx4pixx19)/(3)` `rArr(Gpip76)/(27)` |
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