MCQ
The angular speed of earth around its own axis is ......... $rad / s$
- ✓$\frac{\pi}{43200}$
- B$\frac{\pi}{3600}$
- C$\frac{\pi}{86400}$
- D$\frac{\pi}{1800}$
✓
Answer
Correct option: A.
$\frac{\pi}{43200}$
a
(a)
(a)
Angular speed $=\frac{2 \pi}{T}$
$T \rightarrow$ Time period of earth $=24 h$
$\omega=\frac{2 \pi}{24 \times 60 \times 60}=\frac{\pi}{43200} \,rad s ^{-1}$
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