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```
Q. Two wheels are mounted side by side and each is marked with dot on its rim. The two dots are aligned woth the wheels at rest, then one wheel is given a constant angular acceleration of pi/2 rad/s^2 and the other pi/4 rad/sec^2. Then the two dots become aligned again for the first time after1) 2s 2) 4s3) 1s4) 8s

```
3 years ago

Yashika
16 Points
```							Douse
```
2 years ago
Yashika
16 Points
```							Use relative conceptRelative alpha π/2-π/4 = π/4 Relative displacement =2π Use 2nd equation of relative motion2π=1/2×π/4×t2t=4
```
2 years ago
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• Test paper with Video Solution
• Mind Map
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• NCERT Solutions
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• Previous Year Exam Questions