6 (a) Find the total mass and the center of mass for a system consisting of the 4 masses in the following table. (b) Where should you locate a new object with mass 12 so the new system has its center of mass at (3, 5)? In 1 4 2 7 3 o 5 s 7. = 12 when a = 1.3, and e and h are related by the fonnula 3 + tan(6) = 7h. Find %. 8. Find the integral, Majax 9. Find the integral, I sec( 2 + 3x)dx