1 Attachment(s)
Help needed with shear and moment problem
[ATTACH=CONFIG]650[/ATTACH]
[FONT=arial][COLOR=#333333]Please refer to the link above. This assignment will be due before I get any response, but I would still like to understand the problem thoroughly. Understanding is more valuable to me than a grade.[/COLOR][/FONT]
[COLOR=#333333][FONT=arial]I'm having a little bit of trouble figuring this one out. [/FONT][/COLOR]
[COLOR=#333333][FONT=arial]First of all, I made four cuts: one before the downward force of 500N, one after that force but before the 750N/m (the professor labeled q1 and q2 with the wrong units) distributed load, one in between the 750N/m distributed and one in between the linearly distributed load. Are these the correct cuts to make?[/FONT][/COLOR]
[COLOR=#333333][FONT=arial]Assuming those are the correct cuts (and please let me know if they aren't) for the first section my equations are V(x)=5820+500x-(25/3)x^2 and M(x)=5820x+250x^2-(25/9)x^3. Is this correct?[/FONT][/COLOR]
[COLOR=#333333][FONT=arial]And finally (and most importantly since this is the most confusing to me) how do I handle the problem for the second portion (30m<x<60m)? Do I leave the distributed load as it is? Do I replace the left portion of the distributed load (0<x<30m) with the resultant force and treat the right portion as a new distributed load?[/FONT][/COLOR]
[COLOR=#333333][FONT=arial]I know this on is a doozy, but your help will be much appreciated. [/FONT][/COLOR]