Peyman Khosravi's blog

A new archive of letters and manuscripts related to Stephen Timoshenko

Submitted by Peyman Khosravi on Fri, 06/10/2022 - 21:04

I recently acquired an archive of letters and manuscripts related to Prof. Timoshenko from an auction house in US (I paid 12500 US$).

I am currently organizing and storing them in proper way.

Scale of mechanical systems and force-displacement relation

Submitted by Peyman Khosravi on Sun, 04/26/2009 - 19:20

Scale independent force-displacement relation?

I have a question which has kept my mind busy recently. Assume that we have a system of two masses (m) as shown in the figure. The force (F) results from the gravity force between two masses (m) apart at distance (d), and is applied on a bar with modulus of elasticity (E), length (L), and cross section (A). Assume two pictures are taken from this system from two different distances. So, although the two pictures show an identical system, one of them looks smaller in size compared of the other one.

Subscribe to Peyman Khosravi's blog