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The Cavendish Balance

The Cavendish Balance. Newton’s Universal Law of Gravitation. G = 6.674 x 10 -11 N m 2 /kg 2 is only known to about four places accuracy. Some Important Numbers. Mass of the Earth 6 x 10 24 kg Radius of the Earth 6,400 km Typical Satellite Orbit 200 km (1 mile = 1.609 km)

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The Cavendish Balance

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  1. The Cavendish Balance

  2. Newton’s Universal Law of Gravitation G = 6.674 x 10-11 N m2/kg2 is only known to about four places accuracy

  3. Some Important Numbers Mass of the Earth 6 x 1024 kg Radius of the Earth 6,400 km Typical Satellite Orbit 200 km (1 mile = 1.609 km) Seconds in a day 86,400 Mass of Sun 1.989 x 1030 Mass of Moon 7.350 x 1022 Radius of Moon 1738 km Geosynchronous Orbit 42,000 km from earth center

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