1.-/2 pointsPSE6 12.P.003. A uniform beam of mass mb and length { supports blocks with masses m₁ and m2 at two positions as in Figure P12.3. The beam rests on two knife edges. For what value of x will the beam be balanced at P such that the normal force at O is zero? (Use mb, m₁, m2, l, and d as appropriate in your equation.) x = 27 CG Figure P12.3