Recent content by nivek0078

Still having some issues with how to compare the weight per unit length of the two rods. I'm given E=108x10^3MPa, weight density= 7.78x10^4N/m^3 for both rods, calculated I=117.85 for solid bar. Using the equation Ymax= cFl^3/EI where c=constant, l=1. So please advise on how to proceed here...

Ok so this is what I have so far: for the soild bar find area A=1/4(pie)(dia)^2 -> =38.48mm^2 find moment I=Pie/64(D^4) -> = 117.85mm^4 Find stress stress=My/I where M=bending moment, y=neutral axis, I=moment -> =M(3.5)/117.85 -> stress=.0297(M) for this equation I don't know how to find M...

Hello, Not sure how to go about solving this problem: What outer diameter must a 2mm thick hollow rod have in order to have the same structural bending strength as a solid rod with diameter of 7mm? Also compare the weight per unit length of the two rods. Assume that material is stainless...

Thanks timthereaper for your response. So first off i turned the image so that the x and y orientations were correct. Then i tried to sum the forces at point O in the image. For the forces i looked at the individual compontes in the normal n and tangential t directions. These are the equations...

Hello, I'm very confused with this problem and need some help and direction on how to write dynamic equations of motion. The problem is as follows: Write the dynamic equations of motion for muscle force Fm, hip force Fj in the normal direction n towards rotation center along the -r direction...