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प्रश्न
State Kepler’s law which is represented by the relation r3 ∝ T2.
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उत्तर
Kepler’s law of periods states that: The cube of the mean distance of a planet from the sun is directly proportional to the square of the time it takes to move around the sun.
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संबंधित प्रश्न
The earth and the moon are attracted to each other by gravitational force. Does the earth attract the moon with a force that is greater or smaller or the same as the force with which the moon attracts the earth? Why?
Answer the following:
You can shield a charge from electrical forces by putting it inside a hollow conductor. Can you shield a body from the gravitational influence of nearby matter by putting it inside a hollow sphere or by some other means?
Can two particles be in equilibrium under the action of their mutual gravitational force? Can three particles be? Can one of the three particles be?
Inside a uniform spherical shell
(a) the gravitational potential is zero
(b) the gravitational field is zero
(c) the gravitational potential is same everywhere
(d) the gravitational field is same everywhere
What does a force do in the following case?
You catch a kicked ball.
Answer the following question.
State Newton’s law of gravitation and express it in vector form.
If the law of gravitation, instead of being inverse-square law, becomes an inverse-cube law- ______.
- planets will not have elliptic orbits.
- circular orbits of planets is not possible.
- projectile motion of a stone thrown by hand on the surface of the earth will be approximately parabolic.
- there will be no gravitational force inside a spherical shell of uniform density.
Give scientific reasons for the following:
Newton's gravitational law is the universal law of gravitation.
If the distance between two objects is doubled, the gravitational force becomes ______.
The gravitational force between two objects acts in which direction?
