MEDIUM
9th CBSE
IMPORTANT
Earn 100

Universal law of gravitation states that every object exerts a gravitational force of attraction on every other object. If this is true, why don’t we notice such forces? Why don’t the two objects in a room move towards each other due to this force?

Important Questions on Gravitation

MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 3
Suppose, a planet exists whose mass and radius both are half those of the earth. Calculate the acceleration due to gravity on the surface of this planet.
MEDIUM
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 4
A stone and the earth attract each other with an equal and opposite force. Why then we see only the stone falling towards the earth but not the earth rising towards the stone?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 1
Define thrust. What is the SI unit?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 2
Define pressure. What is its SI unit?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 3
What is the name given to 'thrust per unit area'?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 4
What is the relation between pressure, force and area?
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 5
Name the quantity whose one of the units is pascal (Pa).
EASY
9th CBSE
IMPORTANT
Physics For Class 9>Chapter 3 - Gravitation>Exercise>Q 6
Define density. Give its S.I. unit.