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प्रश्न
If you compare the gravitational force on the Earth due to the Sun to that due to the Moon, you would find that the Sun’s pull is greater than the Moon’s pull. (You can check this yourself using the data available in the succeeding exercises). However, the tidal effect of the Moon’s pull is greater than the tidal effect of Sun. Why?
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उत्तर १
Tidal effect depends inversely upon the cube of the distance while, gravitational force depends inversely on the square of the distance. Since the distance between the Moon and the Earth is smaller than the distance between the Sun and the Earth, the tidal effect of the Moon’s pull is greater than the tidal effect of the Sun’s pull
उत्तर २
Tidal effect depends inversely on the cube of the distance, unlike force which depends inversely on the square of the distance. Since the distance of moon from the ocean water is very small as compared to the distance of sun from the ocean water on earth. Therefore, the tidal effect of Moon’s pull is greater than the tidal effect of the sun.
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संबंधित प्रश्न
Choose the correct alternative:
Acceleration due to gravity increases/decreases with increasing depth. (assume the earth to be a sphere of uniform density).
Write the three laws given by Kepler. How did they help Newton to arrive at the inverse square law of gravity?
Suppose the gravitational potential due to a small system is k/r2 at a distance r from it. What will be the gravitational field? Can you think of any such system? What happens if there were negative masses?
Two spherical balls of mass 10 kg each are placed 10 cm apart. Find the gravitational force of attraction between them.
A particle of mass 100 g is kept on the surface of a uniform sphere of mass 10 kg and radius 10 cm. Find the work to be done against the gravitational force between them to take the particle away from the sphere.
A ball is thrown vertically upwards. It goes to a height 20 m and then returns to the ground. Taking acceleration due to gravity g to be 10 ms-2 , find :
the total time of journey of the ball .
Multiple Choice Question. Select the correct option.
The mass of earth is 6 × 1024 kg and radius of earth is 6.4 × 106 m. The magnitude of force between the mass of 1 kg and the earth is:
The acceleration produced by a force in an object is directly proportional to the applied _________ And inversely proportional to the _________ Of the object.
Distinguish between gravity and gravitation
Why don't you feel the force of attraction between your friend sitting close to you and yourself?
What is meant by the equation :
`g= Gxxm/r^2`
where the symbols have their usual meanings.
State the law of gravitation. Why is it called universal?
What is the difference between gravity and gravitation?
State Newton's law of gravitation. What is the difference between:
g and G?
Answer the following question.
What are the dimensions of the universal gravitational constant?
The ______ force is much weaker than other forces in nature.
State Newton’s universal law of gravitation. Express it with the mathematical form of force of gravitation?
To project the rockets which of the following principle(s) is /(are) required?
Six point masses of mass m each are at the vertices of a regular hexagon of side l. Calculate the force on any of the masses.
If the distance between two objects is doubled, the gravitational force becomes ______.
