EASY
9th CBSE
IMPORTANT
Earn 100

What is the acceleration of free fall?

Important Questions on Gravitation

EASY
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 10 - Gravitation>Exercises>Q 9
What do we call the gravitational force between the earth and an object?
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 10 - Gravitation>Exercises>Q 10
Amit buys few grams of gold at the poles as per the instruction of one of his friends. He hands over the same when he meets him at the equator. Will the friend agree with the weight of gold bought? If not, why?
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 10 - Gravitation>Exercises>Q 11
Why will a sheet of paper fall slower than one that is crumpled into a ball? 
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 10 - Gravitation>Exercises>Q 12
Gravitational force on the surface of the moon is only 16 as strong as gravitational force on the earth. What is the weight in newtons of a 10 kg object on the moon and on the earth?
HARD
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 10 - Gravitation>Exercises>Q 13
A ball is thrown vertically upwards with a velocity of 49 m/s. Calculate (Take g=9.8 m/s2)
(i) the maximum height to which it rises,
(ii) the total time it takes to return to the surface of the earth.
HARD
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 10 - Gravitation>Exercises>Q 14
A stone is released from the top of a tower of height 19.6 m. Calculate its final velocity just before touching the ground.(Take g=9.8 m/s2)
HARD
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 10 - Gravitation>Exercises>Q 15
A stone is thrown vertically upward with an initial velocity of 40 m/s. Taking g=10 m/s2, find the maximum height reached by the stone. What are the net displacement and the total distance covered by the stone?
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 10 - Gravitation>Exercises>Q 16
Calculate the force of gravitation between the earth and the Sun, given that the mass of the earth = 6×1024 kg and of the Sun = 2×1030 kg. The average distance between the two is 1.5×1011 m and the gravitational constant is G = 6.7 × 10-11 N m2kg-2.