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CBSE NOTES for class 9 th

 

8. motion : Science class 9 th:English Medium NCERT Book Solutions

NCERT Books Subjects for class 9th Hindi Medium

Page 5 of 7

8. motion

 

Uniform Circular Motion : When an object moves in a circular path with uniform speed, its motion is called uniform circular motion

Example of uniform circular motion : 

(i) Motion of the moon around the earth

(ii) Motion of the Earth around the Sun. 

(iii) A satellite in a circular orbit around the earth

(iv) A cyclist on a circular track

Total Distance Covered in circular path : 2 π r 

Speed of athlete in circular path : 2 π r / t 

Factors due to which Changing in the velocity : 

(i) Change in magnitude 

(ii) Change in direction

Uniform circular motion is the motion due to change in direction of object on circular path at its each point. 

 

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