In Figure a uniform 40.0 kg beam is centered over two rollers. Vertical lines across the beam mark off equal lengths. Two of the lines are centered over the rollers; a 10.0 kg package of tamales is centered over roller B. What are the magnitudes of the forces on the beam from?

(a) Roller A and

(b) Roller B? The beam is then rolled to the left until the right-hand end is centered over roller B (Figure). What now are the magnitudes of the forces on the beam from?

(c) Roller A and

(d) Roller B? Next, the beam is rolled to the right. Assume that it has a length of 0.800 m.

(e) What horizontal distance between the package and roller B puts the beam on the verge of losing contact with roller A?

(a) (6)