System of Particles and Rotational Motion - Result Question 18

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18. Two racing cars of masses $m$ and $4 m$ are moving in circles of radii $r$ and $2 r$ respectively. If their speeds are such that each makes a complete circle in the same time, then the ratio of the angular speeds of the first to the second car is

======= ####18. Two racing cars of masses $m$ and $4 m$ are moving in circles of radii $r$ and $2 r$ respectively. If their speeds are such that each makes a complete circle in the same time, then the ratio of the angular speeds of the first to the second car is

3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed:content/english/neet-pyq-chapterwise/physics/system-of-particles-and-rotational-motion/system-of-particles-and-rotational-motion—result-question-18.md (a) $8: 1$

(b) $4: 1$

(c) $2: 1$

(d) $1: 1$

[1995]

Topic 3: Torque, Couple and Angular Momentum

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Answer:

Correct Answer: 18. (d)

Solution:

  1. (d) We know that both the cars take the same time to complete the circle, therefore ratio of angular speeds of the cars will be $1: 1$.