I'm having problem knowing how to work out this question, can anyone point me in the correct direction.(adsbygoogle = window.adsbygoogle || []).push({});

Question

14mm diameter steel rod carries a load of 3.08kN in tension. calculate the stress.?

I ended up with this:

Stress = Force/Area.

Stress = 3.08/154 = Answer = 0.02N/mm²

if the rod is 2.5m long and the modulus of elasticity is 200GN/m2

how much will it extend?

so far i have know idea of the formula or how to work this out?

can anyone help please

I also have one other question related to stress that is

A brass rod measures 10mm in dia, and 150mm length. The rod extends 0.3mm when subjected to a load. given that brass E=85GN/m2

Calculate the stress in the material and the magnitude of the load:

if you could help with the formula that would be a big help.

I'm not able to find any thing on the net and the books i got from the library are over the top in calculations

please help

many thanks

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# Help on stress

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