A marble column of cross-sectional area 1.3 supports a mass of 2.6×104 . what is the strain ?
and what exactly is the difference between stress and strain ? in this qn the stretchedd distance is not given, how can i solve this question ? stretched
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You have not given the units and value of Young's Modulus.
1. Stress stress within the column
= Force /Area
= m*g / Area
= [(2.6 * 10^4 kg) * (9.81 m/sec^2)] / 1.3 m^2
= 19.62 x 10^4 N/m^2
2. Strain
= Stress / Young's Modulus
= [19.62 x 10^4] N/m^2 / [50 x 10^9] N/m^2
= 0.3924 x 10^(-5) .....Answer.
= 3.924 x 10^(-6) .....Answer.