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A body of mass m = 10 kg is attached to ...

A body of mass m = 10 kg is attached to a wire of length 0.3m. The maximum angular velocity with which it can be rotated in a horizontal circle is (Given, breaking stress of wire `= 4.8 xx 10^(7) Nm^(-2)` and area of cross-section of a wire `= 10^(-6) m^(2)`)

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The correct Answer is:
4

`(T)/(A)= sigma` ...(i)
`T= m omega^(2)l` ....(ii)
On solving (i) and (ii)
`omega = sqrt((sigma A)/(lm)) rArr omega= 4 rad//s`
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