System of Particles and Rotational Motion - Result Question 15

15. Two racing cars of masses m1 and m2 are moving in circles of radii r1 and r2 respectively. Their speeds are such that each makes a complete circle in the same time t. The ratio of the angular speeds of the first to the second car is [1999]

(a) 1:1

(b) m1:m2

(c) r1:r2

(d) m1m2:r1r2

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Answer:

Correct Answer: 15. (a)

Solution:

  1. (a) As time taken by both car to complete one revolution is same.

As ω=2πTω1T, as T is same in both cases. Hence ’ ω ’ will also be same.



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