Question

Calculate the value of g in detail

Answer 1

equation 10.9 refers to the formula of universal law of gravitation that is g = G × M /R^2. (R^2 refers to R square)

Answer 2

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mg = G M × m / R²     
  a = G M / R²

➧G = 6.7 × 10¯¹¹ N m² Kg²            (Gravitational Constant)

➧M = 6 × 10²⁴ Kg               (Mass of Earth)

➧R = 6.4 × 10⁶ cm            (Radius of earth)

So, g = G M / R²

➾ 6.7 × 10¯¹¹ N m² Kg² × 6 × 10²⁴ Kg / 6.4 × 10⁶ cm

➾ 9.8 m s¯² ...✔

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