_ force is responsible for the motion of the planets around the sun:
Correct answer: A. Gravitation
- A. Gravitation
- B. Weak
- C. Strong
- D. None of these
Explanation
The gravitational force is responsible for the motion of planets around the Sun. According to Newton's law of universal gravitation, every point mass attracts every other point mass in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. For an object like a planet orbiting a star, gravity is the centripetal force that keeps it in orbit. The gravitational force between the sun (mass M) and the planets (mass m) is given by the formula: F= GMm/r2
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About Gravitation
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.
Practise Gravitation
265 free Gravitation MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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