NEET · Physics · STD 11 - 6. system of particles and rotational motion
The angular speed of the wheel of a vehicle is increased from \(360 \;rpm\) to \(1200 \;rpm\) in \(14 \;second\). Its angular acceleration is,
- A \(1 \;rad / s ^{2}\)
- B \(2 \pi \;rad / s ^{2}\)
- C \(28 \pi \;rad / s ^{2}\)
- D \(120 \pi \;rad / s ^{2}\)
Answer & Solution
Correct Answer
(B) \(2 \pi \;rad / s ^{2}\)
Step-by-step Solution
Detailed explanation
\(\omega_{0}=360 rpm =360 \times \frac{2 \pi}{60}=12 \pi rad / s\) \(\omega=1200 rpm =1200 \times \frac{2 \pi}{60}=40 n rad / s\)
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