Chapter 13 Gravitation. Newton’s law of gravitation Any two (or more) massive bodies attract each other Gravitational force (Newton's law of gravitation) Gravitational constant G = 6.67*10 –11 N*m 2 /kg 2 = 6.67*10 –11 m 3 /(kg*s 2 ) – universal constant.
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In reality gis not a constant because:
Earth is rotating,
Earth is approximately an ellipsoid
with a non-uniform density
Weight of a crate measured at the equator:
Brahe de Knudstrup
(a) 8.0 × 108 J;
(b) 36 N