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Physics · GRAVITATION
हिन्दीWhy is the historical Cavendish experiment often famously described as an experiment to 'weigh the Earth'?
Correct answer · Option 4
Measuring the universal constant \( G \) alongside known surface \( g \) and Earth's radius \( R_E \) allowed the determination of Earth's mass \( M_E \).
Explanation
Since \( g = \frac{G M_E}{R_E^2} \), determining \( G \) allowed calculation of \( M_E = \frac{g R_E^2}{G} \), which is why Cavendish is credited with 'weighing the Earth'.
