A mass \( m \) is attached to a thin wire and whirled in a vertical...

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A mass \( m \) is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when
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(a) inclined at an angle of \( 60^{\circ} \) from vertical
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(b) the mass is at the highest point
(c) the wire is horizontal
(d) the mass is at the lowest point
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