steel rod of 3cm diameter is enclosed centrally in a hollow copper tube of external diameter of
4cm. The composite bar is ten subjected to an axial pull of 45000 N. If the length of each bar is
equal to 15cm, determine.
(i) The stresses in the rod and tube, and
(ii) Load carried by each bar
Take E for steel = 2.1 x 105 N/mm2
and for copper = 1.1 x 105 N/mm2
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