A uniform beam has a mass of 18 kg and rests on two surfaces at points A and B. Determine the maximum distance x to which the girl can slowly walk up the beam before it begins to slip. The girl has a mass of 50 kg and walks up the beam with a constant velocity.

A uniform beam has a mass of 18 kg and rests on two surfaces at points

1.	A uniform beam has a mass of 18 kg and rests on two surfaces at points A and B. Determine the maximum distance x to which the girl can slowly walk up the beam before it begins to slip. The girl has a mass of 50 kg and walks up the beam with a constant velocity.
A.	x = 0.678 m
B.	x = 0.508 m
C.	x = 1.005 m
D.	x = 0.712 m
Answer» D. x = 0.712 m