the weight of the book at the surface of the earth is 5 Newton . What will be the weight of the same book at a height equal to the radius of the radius?
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Acvording to question heigh abobe earth=r so the distance from centre=2r and g=Gm/2r^2 and g= Gm/4r^2 .g=1/4Gm/r^2.1/4g=Gm/r^2 rhw weight=m×g let g=10 .o so new weight=mg/4 .5/4=1.25N
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