Under certain conditions, wind blowing past a rectangular speed limit sign can cause the sing to oscillate with a freque

[answerhappygod]

Under certain conditions, wind blowing past a rectangularspeed limit sign can causethe sing to oscillate with a frequency 𝜔. Assume that 𝜔 is afunction of the sign width,𝑏, sign height, ℎ, wind velocity, 𝑉, air density 𝜌, and an elasticconstant, 𝑘, for thesupporting pole. Hint: The constant 𝑘 has dimensions of [force xlength].a) How many (non-dimensional) Π-groups are there? (3 points)b) Find these non-dimensional groups. (7)c) Can one of the Π-groups be considered a Reynolds number? (3points)