# Designing a buoy teather

Binkai
Consider a buoy in the form of a vertical right circular cylinder of outside diameter (D) of 8 feet, and
height (H) of 12 feet. The buoy is a hollow cylinder formed of glass-fiber-reinforced plastic (FRP)
that is ½-inch thick. The buoy is to be placed in a large river and tethered to the bottom by a cable
that is 80 feet long. The cable is supposed to snap if the water depth exceeds 90 feet. Compute the force on the cable at different river depths and the force at which
the cable should be designed to snap. Create a graph of cable force as a function of river depth. I'm totally lost. No idea where to begin.

harrylin
Consider a buoy in the form of a vertical right circular cylinder of outside diameter (D) of 8 feet, and
height (H) of 12 feet. The buoy is a hollow cylinder formed of glass-fiber-reinforced plastic (FRP)
that is ½-inch thick. The buoy is to be placed in a large river and tethered to the bottom by a cable
that is 80 feet long. The cable is supposed to snap if the water depth exceeds 90 feet. Compute the force on the cable at different river depths and the force at which
the cable should be designed to snap. Create a graph of cable force as a function of river depth. I'm totally lost. No idea where to begin.

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