A marble column of cross-sectional area 1.5 m^2 supports a mass of 2.5×10^4 kg. What is the stress within the column? What is the strain? I have already found the stress in the column by taking (25000kgx9.8 m/s^2)/1.5m^2 The problem is i have no clue how to find the strain given this information. I know strain is delta Y/ original length, or strain/youngs modulus.