Find the mass m and the center of mass of the linear wire covering the given interval and having the given density (x): x, f(x) = 5x^2
a) m = 1/3, Center of mass at 1/2
b) m = 1/2, Center of mass at 1/3
c) m = 1/5, Center of mass at 1/4
d) m = 1/4, Center of mass at 1/5