3 9 O r R V4 9 25 O r R 13 A body weighs 90 N on the surface of earth The gravitational force on it due to earth at a height equal to half the radius of earth is NCERT Pg 190 40 N 1 81 N 3 45 N 14 The escape speed of a projectile on the north surface is 112 km s A body is 4 30 N 16 For a satelli around the ea to the magnit 1 1 3 2 17 A point mass shell of m gravitational mass is
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