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A thick metallic cylindrical rod which i...

A thick metallic cylindrical rod which is to be cut when placed between th jasws of a 'vice' the handle to roated though `4xx360^(@)`, if the distance moved by the movable jaws is `0.5` cm per rotation then calculate the radius of the rod. (Assume that initially th jaws are in contact with each other)

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From the question it is clear that the handle was rotated through '4' rotations (n) .
`:. n=4`
The distance moved by the movable jaw per rotation `=0.5cm`
`:.` Total distance moved by the jaw `=4 xx0.5cm 2cm`
`:.` The diameter of the rod = distance between jaws when the rod is placed between them
`d=2m`
`rArr 2r=2 cm rArrr=1`
`:.` Radius of the rod =1 cm
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