EASY
11th CBSE
IMPORTANT
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If the sun and the planets carried huge amounts of opposite charges,

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Important Questions on Gravitation

EASY
11th CBSE
IMPORTANT
There have been suggestions that the value of the gravitational constant G becomes smaller when considered over a very large time period (in billions of years) in the future. If that happens, for our earth
HARD
11th CBSE
IMPORTANT

Supposing Newton's law of gravitation for gravitation forces F1 and F2  between two masses is m1 and m2 at positions r¯1 and r¯2 read F¯=-F2=-r12r123GM02m1m2M02 where M0 is a constant of the dimension of mass, r12=r1-r2 and n is number. In such a case

EASY
11th CBSE
IMPORTANT
Which of the following are true?
MEDIUM
11th CBSE
IMPORTANT
The centre of mass of an extended body on the surface of the earth and its centre of gravity
EASY
11th CBSE
IMPORTANT
Molecules in the air in the atmosphere are attracted by the gravitational force of the earth. Explain why all of them do not fall into the earth just like an apple falling from a tree.
EASY
11th CBSE
IMPORTANT
Give one example of each a central force and a non-central force.
EASY
11th CBSE
IMPORTANT
Draw an areal velocity versus time graph for Mars.
EASY
11th CBSE
IMPORTANT
What is the direction of the areal velocity of the earth around the sun?