The beam above is supported by a pin at A and a roller at B. If we define point A as x = 0 and x as increasing to the right, then the distributed load can be expressed as (x) = 150 + 1 2 x 3 . Perform the following: a) Find the concentrated load equivalent to the distributed load w(x) and find where it acts on the beam. b) Determine the support reactions at points A and B.