Define (a) tensile Stress; (b) tensile strain; (c) yield point.
PHYSICS
WAEC 2007
Define (a) tensile Stress; (b) tensile strain; (c) yield point.
Explanation
(a) Tensile stress is the force per unit cross-sectional area of a wire or rod.
(b) Tensile strain is the extension per unit length.
(c) Yield point is a point on a load versus extension graph that represents the least force beyond which plastic deformation occurs.
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