Recent content by mchei

for question like above, is superposition necessary?

I have some questions about calculating the deflection of beam. First, when should I applied the method of superposition ? Second, When I'm setting a "x" on the beam, where should I start and end ? Thank you for answering!

help =[

that's true, thx

Homework Statement The Attempt at a Solution define RHS as +ve in a part, i have calculared that force by conveyor is +1.962N in b part, then, to balance force, 4.91sin@+1.962=1.962cos@ => @=-43.6' i an confused about the negative sign... what is my problem?

sorry for replying an old thread. i know that BC is zero force member but by my calculation, the reaction at support C is 86.6N upward. the problem is that: if i hvn't remove the zero force member before calculation, i will assume that BC will cancel 86.6N. and go on, EC will be "no load"...

i am confused on the determination of zero force member from the above pic, the coloured beam is zero member, i know that when u view from joint B, 2 beams are zero member, but when u view from A, beam_AB is not zero, are there any contradiction? also, i don't know why when F_AB is zero...