NEETPhysicsOscillations
Two cyclists A and B are moving with uniform circular motion on identical circular tracks. Cyclist A completes one revolution in 3 minutes, while cyclist B completes one revolution in 4 minutes. What is the ratio of the angular distances covered by A and B ( _A : _B ) in a time interval of 12 minutes?
Options
- A4 : 3
- B3 : 4
- C1 : 1
- D16 : 9
Correct answer
A. 4 : 3
Step-by-step solution
The angular distance covered by a particle in uniform circular motion is given by = t = ( 2 T )t . For cyclist A, the time period T_A = 3 minutes . For cyclist B, the time period T_B = 4 minutes . Since the time interval t = 12 minutes is the same for both cyclists, the ratio of their angular distances is inversely proportional to their time periods: _A _B = T_B T_A _A _B = 4 3 Thus, the ratio is 4 : 3 . Answer: 4 : 3