Answer:
The the elongated length is
The change in diameter is

Step-by-step explanation:
From the question we are told that
The diameter of the cylindrical bar is

The length of the cylindrical bar is

The force that deformed it is

Elastic modulus is

The Poisson's ratio is

Generally elastic modulus is mathematically represented as

Where
is the strain which is mathematically represented as

Where
is the elongation length
is the stress on the cylinder which is mathematically represented as

Where F is the force and
A is the area which is calculated as

Substituting values


So the stress is


Thus the elastic modulus is
making
the subject

Substituting values

Converting to mm
Generally the poisson ratio is mathematically represented as

The negative sign indicate a decrease in diameter as a result of the force
making
the subject

Substituting values


Converting to mm
