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InterviewSolution
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The binding energy of an object of mass `m` placed on the surface of the earth r is (R = radius of earth, g = acceleration due to gravity)A. `mg R//2`B. mg RC. `(mgR)/(4)`D. `(mgR)/(8)` |
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Answer» Correct Answer - B The energy required to remove an object from the surface of the earth to infinity is called binding energy of the object. It is equal to negative of gravitational potential energy of the object Thus, bindin energy `= -E=(GMm)/(R)` but, `g=(GM)/(R^(2))rArrGM=gR^(2)rArr BE=(gmR^(2))/(R)=gmR`. |
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