Athin, light wire 75.2 cm long having a circular cross section 0.560 mm in diameter has a 25.2 kg weight attached to it, causing it to stretch by 1.10 mm . you may want to review (page) . for related problem-solving tips and strategies, you may want to view a video tutor solution of a stretching elevator cable. part a what is the stress in this wire? express your answer in pascals.

The stress is calculated as

Solution:

As per the question:

Length of the wire, l = 75.2 cm = 0.752 m

Diameter of the circular cross-section, d = 0.560 mm =

Mass of the weight attached, m = 25.2 kg

Elongation in the wire,

Now,

The stress in the wire is given by:

         (1)

Now,

Force is due to the weight of the attached weight:

F = mg =

Cross  sectional Area, A =

Using these values in eqn (1):

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