Center of Mass & Simple Balance Video Lessons

Concept

# Problem: A student of mass 62 kg wants to walk beyond the edge of a cliff on a heavy beam of mass 340 kg and length 11 m. The beam is not attached to the cliff in any way, it simply lies on the horizontal surface of the clifftop, with one end sticking out beyond the cliff’s edge. How far from the edge of the ledge can the beam extend if it sticks out as far as possible beyond the edge, but the student can walk to the beam’s end without falling down? 1. 3.73362 2. 2.44755 3. 2.62215 4. 3.2345 5. 4.59569 6. 4.72158 7. 4.10294 8. 5.15837 9. 4.65174 10. 2.26349

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###### Problem Details

A student of mass 62 kg wants to walk beyond the edge of a cliff on a heavy beam of mass 340 kg and length 11 m. The beam is not attached to the cliff in any way, it simply lies on the horizontal surface of the clifftop, with one end sticking out beyond the cliff’s edge. How far from the edge of the ledge can the beam extend if it sticks out as far as possible beyond the edge, but the student can walk to the beam’s end without falling down?

1. 3.73362

2. 2.44755

3. 2.62215

4. 3.2345

5. 4.59569

6. 4.72158

7. 4.10294

8. 5.15837

9. 4.65174

10. 2.26349