4. The gravitational force between two objects is 100 N. How should the distance between these objects be changed
so that the force between them becomes 50 N?
(C.B.S.E. 2015) (Ans. 2r)
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Answer:
F'=50N
Explanation:
yes when the distance between two bodies is 100N then the bodies should be in √(2) distance of orginal distance. Which is presented below,
F=GMm/d^2
100=GMm/d^2
Let this be equation 1st
Again,
F'=GMm/ (√(2)d)^2
F'=GMm/2d^2
F'=GMm/d^2*1/2
From equation 1st GMM/d^2 =100
F'=100 * 1/2
F'= 50N
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