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JEE PHYSICS MCQ: GRAVITATION
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Medium
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Understanding
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Which of the following is/are correct.
I. An object moving the earth under the influence of Earth's gravitational force is in a state of "free-fall".
II. The dominant effect causing a slowdown in the rotation of the earth is the gravitational pull of other planets in the solar system.
III. Generally the path of a projectile from the earth is parabolic but it is elliptical for projectiles going to a very large height.
IV. The path of a projectile is independent of the gravitational force of earth.
I. An object moving the earth under the influence of Earth's gravitational force is in a state of "free-fall".
II. The dominant effect causing a slowdown in the rotation of the earth is the gravitational pull of other planets in the solar system.
III. Generally the path of a projectile from the earth is parabolic but it is elliptical for projectiles going to a very large height.
IV. The path of a projectile is independent of the gravitational force of earth.
View answer and explanation
Correct option: C
I and III
Option C is correct because an object moving under Earth's gravity is in free-fall, and projectile paths are generally parabolic but become elliptical at very large heights.
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