A Uniform Beam with a Mass of 120 Kg and a Length

Multiple Choice

A uniform beam with a mass of 120 kg and a length of 5.0 m rests on two supports, one at the left edge and one 3.0 m from the left edge. How close to the right edge can a 68-kg person walk along the beam without causing it to tip over?

A) 1.6 m
B) 1.8 m
C) 0.88 m
D) 1.5 m
E) 0.50 m