Kinematics Question 707

Question: Two particles of equal masses are revolving in circular paths of radii r1 and r2 respectively with the same speed. The ratio of their centripetal forces is [NCERT 1984]

Options:

A) r2r1

B) r2r1

C) (r1r2)2

D) (r2r1)2

Show Answer

Answer:

Correct Answer: A

Solution:

F=mv2r. If m and v are constants then F1r F1F2=(r2r1)



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