The mass of earth on the basis of Newton's Law of Gravitation is given by:
Correct answer: C. M = 5.98 x 10^24 kg
- A. M = 9.1 x 10^-31 kg
- B. M = 1.6027 x 10^-27 kg
- C. M = 5.98 x 10^24 kg
- D. M = 6.02 x 10^23 kg
- E. M = 3 x 10^3 kg
Explanation
By equating Newton's second law with his law of universal gravitation, and inputting for the acceleration the experimentally verified value of 9.8 m/s2, the mass of the earth is calculated to be 5.98 x 10^24 kg . Since it is numerically derivated so it could have only one answer.
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Newton’s law of universal gravitation relates the force between masses to their masses and separation, while gravitational field strength explains weight and orbital motion. The topic covers satellite velocity and period, escape ideas, weightlessness in free fall, and artificial gravity, which differs from ordinary gravitational attraction.
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