Gravitation (Class 9)
Universal law of gravitation, free fall, mass and weight, thrust and pressure, buoyancy, Archimedes' principle.
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Take a full mock →Q1 · Gravitation (Class 9) · MEDIUM
The mass of Earth is 6 × 10²⁴ kg and its radius is 6.4 × 10⁶ m. What is the acceleration due to gravity on the surface of Earth? (G = 6.67 × 10⁻¹¹ N m²/kg²)
Q2 · Gravitation (Class 9) · HARD
The mass of the Earth is 81 times the mass of the Moon and the radius of the Earth is 3.7 times that of the Moon. The ratio of the acceleration due to gravity on Earth to that on the Moon is approximately: