Merely a question concerning elementary calculation of stiffness:(adsbygoogle = window.adsbygoogle || []).push({});

I have two rectangular and solid bars made of the same homogeneous material: Bar A is 0.85 cm high and 0.5 cm wide, whereas bar B is 1.0 cm high and 0.425 cm wide – and as both bars have the same cross-section area (of 0.425 cm²), both bars have the same mass per unit of length. Nevertheless, bar B is vertically stiffer, which is the problem: How much do I have to reduce the width (and not the height) of bar B to obtain the exact vertical stiffness of bar A? And what is the formula for this calculation?

Thank you

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Merely a question concerning elementary calculation of stiffness

**Physics Forums | Science Articles, Homework Help, Discussion**