MCQ
A wheel is of diameter $1\ m.$ If it makes $30$ revolution per second, then the linear speed of a point on its circumference will be
- ✓$30\,\,\pi \,\,\,m/s$
- B$\pi \,\,\,m/s$
- C$60\,\,\pi \,\,\,m/s$
- D$\frac{\pi }{2}\,\,\,m/s$
✓
Answer
Correct option: A.
$30\,\,\pi \,\,\,m/s$
a
$V=r \omega$
$V=r \omega$
$\mathrm{V}=\frac{1}{2} \times(30 \times 2 \pi)$
$\mathrm{V}=30 \pi \mathrm{m} / \mathrm{s}$
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