Question

Mass of the Earth has been determined through
(a) use of Kepler's T²/R³ constancy law and Moon's period
(b) sampling the density of Earth's crust and using Earth's
radius
(c) Cavendish's determination of G and using Earth radius
and g at its surface
(d) use of periods of satellites at different heights above
Earth's surface and known radius of Earth

Answer 1

Answer:

(c) Cavendish's determination of G and using Earth's radius and g at it's surface.

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