"TENSION, COMPRESSION, SHEAR, ELASTICITY AND YOUNG'S MODULUS. Below the elastic limit, or maximum stress that can be applied to an object without causing permanent deformation, a tension or compressive force FORCE actson an object of initial length LENGTH0 and cross-sectional area AREACROS to change its length by DELTALEN. Young's modulus YOUNGMOD is the ratio: (longitudinal stress)/(longitudinal strain) and it has the dimensions of a stress (N/m^2 or Pascal Pa and pound/in^2). ■ ______________________ A=cross-sec area /____________________ /| | OBJECT |A| ---> |_____________________|/ FORCE |---LENGTH0--------|--| DELTA LENGTH ■ Type (F2) to return to helpfile. ''(c) Copyright PCSCC, Inc., 1993"
