Whatis the magnitude of the gravitational force between the earth and a 1kg object on its surface? (Mass of the earth is 6 × 10²⁴kg and radius of the earth is 6.4 ×10⁶m).

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Solution

Accordingto the universal law of gravitation,gravitational force exerted on an object of mass mis given by:
Where,
Massof Earth, M =6 Ã—10²⁴kg
Massof object, m =1 kg
Universalgravitational constant, G = 6.7 Ã—10^âˆ’11Nm²kg^âˆ’2
Sincethe object is on the surface of the Earth,r = radiusof the Earth (R)
r= R = 6.4Ã—10⁶ m
Gravitationalforce,

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Whatis the magnitude of the gravitational force between the earth and a 1kg object on its surface? (Mass of the earth is 6 × 1024kg and radius of the earth is 6.4 ×106m).

Whatis the magnitude of the gravitational force between the earth and a 1kg object on its surface? (Mass of the earth is 6 × 10²⁴kg and radius of the earth is 6.4 ×10⁶m).