The angular speed of a fly wheel making $120$ revolutions/minute is
The angular speed of a fly wheel making $120$ revolutions/minute is
- [AIPMT 1995]
- A
$2\pi \,\,rad/s$
- B
$4{\pi ^2}\,\,rad/s$
- C
$\pi \,\,rad/s$
- D
$4\pi \,\,rad/s$
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$(B)$ $v_0^2-2 g h=\frac{\sqrt{3}}{2} g R$
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$(D)$ the centripetal force required is maximum at points $x$ and $z$
- [IIT 2020]
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