मराठी

Who stated the law of gravitation?

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प्रश्न

Who stated the law of gravitation?

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उत्तर

Sir Isaac Newton stated the law of gravitation.

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पाठ 3: Laws of Motion - Exercise 2 [पृष्ठ १२५]

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फ्रँक Physics [English] Class 9 ICSE
पाठ 3 Laws of Motion
Exercise 2 | Q 1 | पृष्ठ १२५

संबंधित प्रश्‍न

Consider a planet moving in an elliptical orbit round the sun. The work done on the planet by the gravitational force of the sun
(a) is zero in any small part of the orbit
(b) is zero in some parts of the orbit
(c) is zero in one complete revolution
(d) is zero in no part of the motion.


A thin spherical shell having uniform density is cut in two parts by a plane and kept separated as shown in the following figure. The point A is the centre of the plane section of the first part and B is the centre of the plane section of the second part. Show that the gravitational field at A due to the first part is equal in magnitude to the gravitational field at B due to the second part.


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 final velocity of the ball on reaching the ground .


At what height above the earth's surface would the value of acceleration due to gravity be half of what it is on the surface? Take the radius of earth to be R.


What is the difference between gravity and gravitation?


Show that gravity decreases at higher altitudes.


Answer the following question.

What are the dimensions of the universal gravitational constant?


Solve the following problem.

Find the gravitational force between the Sun and the Earth.
Given Mass of the Sun = 1.99 × 1030 kg
Mass of the Earth = 5.98 × 1024 kg
The average distance between the Earth and the Sun = 1.5 × 1011 m.


Law of gravitation gives the gravitational force between


Choose the wrong option.


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