A 1.05-m-Iong rod of negligible weight is supported at its ends by wires A and B of

Question:

A 1.05-m-Iong rod of negligible weight is supported at its ends by wires A and B of equal length (Fig. 11.62). The cross sectional area of A is 2.00 mm2 and that of B is 4.00 mm2€¢ Young's modulus for wire A is 1.80 X 1011 Pa; that for B is 1.20 X 1011 Pa. At what point along the rod should a weight w be suspended to produce
(a) Equal stresses in A and B, and
(b) Equal strains in A and B?

1.05 m