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A body of mass m = 0 kg is attached to a...

A body of mass m = 0 kg is attached to a wire of length 0.3 m. Calculate the maximum angular velcoity with wicch it can be rotated in a horizontal circle (Breaking stress of wire `= 4.8 x 10^(7)N//m^(2)` and area of cross-section of wire = `10^(-6)m^(2)`)

A

`4 rad//s`

B

`8 rad// s`

C

`1 rad// s`

D

`2 rad// s`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Breaking strength=tension in the wire =`mromega^(2)`
`4.8xx10^(7)xx10^(-6)=10xx0.3xxomega^(2)`
`omega^(2)=(48)/(0.3 xx 10)=16 implies omega=4` rad/s
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