MCQ
A body performing unifom circular motion completed $140$ revolution in a second. Its angular speed is .......... $rad / s$
- ✓$880$
- B$440$
- C$220$
- D$240$
✓
Answer
Correct option: A.
$880$
a
(a)
(a)
$f=140 red / sec$
$\omega=2 \pi F \rightarrow$ frequency
$\downarrow$
angular speed
$\omega=2 \pi x 140$.
$\omega=280 \times 3.14=879.8 rad / s$
$\omega \simeq 880 rad / s$
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