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प्रश्न
State Newton's law of gravitation. What is the difference between:
Gravity and gravitation
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उत्तर
Newton law of gravitation is that every object in the universe attracts every other object with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Gravity is the force of attraction between the object and the earth whereas gravitation refers to the force of attraction that exists between any two bodies that possess mass.
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संबंधित प्रश्न
How will you ‘weigh the sun’, that is estimate its mass? The mean orbital radius of the earth around the sun is 1.5 × 108 km.
Which of the Kepler’s laws of planetary motion led Newton to establish the inverse-square rule for gravitational force between two bodies ?
State two applications of universal law of gravitation.
The weight of an object is more at the poles than at the equator. Is it beneficial to purchase goods at equator and sell them at the pole? Does it matter whether a spring balance is used or an equal-beam balance is used?
How will the force of gravitation between two objects change if the distance between them is:
Almost zero
Is the law of gravitation applicable in case of the sun and the moon?
Explain why:
The atmosphere does not escape.
Is there a gravitational attraction between you and the book? Explain.
The gravitational force between a hollow spherical shell (of radius R and uniform density) and a point mass is F. Show the nature of F vs r graph where r is the distance of the point from the centre of the hollow spherical shell of uniform density.
Who measured the value of the Universal Gravitational Constant G using the Cavendish balance?
