1. The problem statement, all variables and given/known data Find x coordinant of the the center of mass point of a uniform wire that subtends an arc of 22 degrees if the radius of the circular arc is 1m. 2. Relevant equations I begin with: length = r*theta Therefore M = density*r*theta dm = density*ds = denisty*r8*d(alpha) x= (1/M)*[integral of r*cos(alpha)*denisty*r*d(alpha) from (theta/2) to -(theta/2) Thus, I get x = (2r/theta)*sin(theta/2) 3. The attempt at a solution I keep getting an answer of 0.01735 m. However, the online homework is telling me that it is not the correct answer. I am not sure where in the above calculations I would have messed up. Could someone please point out where I have made an error? Thank you in advance.