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9th CBSE
IMPORTANT
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Centripetal force is required for a body to move on a circular path. What provides this force to the moon to move around the earth? 

Important Questions on Gravitation

EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Assignment>Q 20
Gravitational force acts on all objects is proportional to their masses. Why does heavy object not fall faster than a higher object
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Assignment>Q 21
Where is the acceleration due to gravity minimum and maximum on the surface of earth?
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9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Assignment>Q 22
Calculate the weight of an astronaut mass of 80 kg on the surface of earth and on the surface of moon. Given that the acceleration due to gravity at moon is 16th that of earth.
MEDIUM
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Assignment>Q 23

Look at the diagram below. A sheet of paper and crumpled paper are dropped down from the same height and time is noted. Which paper will fall down first in open containers?

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MEDIUM
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Assignment>Q 23

Look at the diagram below. A sheet of paper and crumpled paper are dropped down from the same height and time is noted. Which paper will 
fall down first in the closed container with vacuum inside the container?

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EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Assignment>Q 24
Suppose the mass of earth somehow increases by 10% without any change in its size. What would happen to our weight.
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9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Assignment>Q 25
A man weights 900 N on earth. What is his mass? (g = 10 m s-2) On moon his weight would be 150 N. What is the acceleration due to gravity on moon?
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 3 - Gravitation>Assignment>Q 26
If a planet existed whose mass and radius were both half of earth, what would be the acceleration due to gravity at the surface of that planet in terms of that on the surface of earth?