A light wire of length ℓ (figure-1) is cut into two pieces in two different ways as shown in (figure-2 & 3). Different pieces can be arranged in place of wire as shown and a load can be placed on the

Question

A light wire of length ℓ (figure-1) is cut into two pieces in two different ways as shown in (figure-2 & 3). Different pieces can be arranged in place of wire as shown and a load can be placed on the massless hanger. Choose the correct statement(s).

TestHub · Accepted Answer

Breaking stress is the same for all pieces of the same material.
$F_{b re ak} = σ_{b re ak} A$
A, B' and C' retain the original area. B and C have smaller areas after the longitudinal cut.
$F_{A} = F_{B^{'}} = F_{C^{'}}$
$F_{B} < F_{B^{'}}$
Thus (C) and (D) are correct. The force ratio in (A) is not six.

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