In the lesser-known tale of the Trojan Cow, the would-be invaders of a castle attempt to cross the moat while hidden in the belly of a giant, wooden gift-cow. To cross the moat, an engineer wedges a wooden bridge
between the walls of the moat.
What is known:
- The cow exerts a resultant vertical force at a distance d from the left edge of the bridge.
- There are three ways the bridge can be wedged against the walls of the moat:
1) The bridge is in contact with the rough surface of the walls on each end.
2) The bridge has smooth surface on both ends which allows slipping (similar to a roller).
3) The bridge is in contact with the rough surface of the walls on one end, and has a smooth surface on the other.