Kinematics Question 699

Question: Two racing cars of masses $ m _{1} $ and $ m _{2} $ are moving in circles of radii $ r _{1} $ and $ r _{2} $ respectively. Their speeds are such that each makes a complete circle in the same duration of time $ t $ . The ratio of the angular speed of the first to the second car it’s[NCERT 1980; MNR 1995; CBSE PMT 1999; UPSEAT 2000]

Options:

A) $ m _{1}:m _{2} $

B)$ r _{1}:r _{2} $

C) 1 : 1

D) $ m _{1}r _{1}:m _{2}r _{2} $

Show Answer

Answer:

Correct Answer: C

Solution:

As time periods are equal therefore ratio of angular speeds will be same. $ \omega =\frac{2\pi }{T} $



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