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Question 5.21: A rectangular street sign that is 2 m wide and 1 m high is s...

A rectangular street sign that is 2 m wide and 1 m high is secured to a post that is secured into the ground, as illustrated in Figure EP 5.21. The sign is at sea level, and is designed to withstand a maximum wind speed of 35 m/sec. Assume a drag coefficient for the sign, C_{d} of 1.2. (a) Determine the drag force on the street sign. (b) Determine the reaction force acting on the sign due to the thrust force of the maximum wind flow (anchoring force required to keep sign from detaching from the post).

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