Recent content by Mynona

I am partially with you. But do I rotate the already rotated arm (ie, finding standard matrix for the rotated arm), or do I find the two other standard matrices from rotating based on the e1, e2, e3 vectors?

Homework Statement A robot arm in a xyz coordinate system is doing three consecutive rotations, which are as follows: 1) Rotates (Pi/4) rad around the z axis 2) Rotates (Pi/3) rad around the y axis 3) Rotations -(Pi/6) rad around the x axis Find the standard matrix for the (combined)...

I have a cosine function, namely the function for oscillation x=A cos(wt). I want to separate the t out here, so I can solve for it. My teacher gave the the answer to be t= (arccos (x/a)/2pi)*T, but I can't quite see where he came up with that. Would anyone be as kind as to give me a more...