Question: Calculate the total drag force on a bridge cable which is 8 in. in diameter and extends a distance of 1,000 ft between support towers when a wind is blowing across the line with a velocity of 40 mph. Use properties of air at 60°F.
2. Calculate the force acting on a circular bridge pier 5 ft in diameter which is immersed 60 ft in a river which is traveling at 3 mph. River temperature is at 70°F.